chassis

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SRU SRUNA-22 Bullpup Chassis

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SRU Precision Sruna-22

10/22 Bullpup Chassis

Review

  If you are into guns, or maybe even if you aren't, you most likely have a Ruger 10/22. If you are like me, you can't leave anything in factory form. To help with that modification addiction, SRU Precision has their SRUNA-22 Bullpup Chassis for the 10/22 rifles and their clones. The Sruna-22 easily converts those 10/22's into a space age bullpup design. 

  I was looking for something different to do with a 10/22 that I had laying around. SRU had asked if I wanted one of the Sruna's to review. After using their SARB-15 AR bullpup kits, and liking it so much, I agreed. The Sruna's come in 3 standard colors: Black, Tan, and OD Green. However they currently have a limited edition White Sruna-22. I decided on the white one because it looks more like a space blaster than the other three. All of the Sruna chassis are the same, except for the color. 

  Now that you have decided on the SRUNA-22, what do you get? To start with, you get a complete exterior chassis that bolts on and around your 10/22. The Sruna separates into, essentially, 3 pieces for assembly and disassembly. You have the main aluminum piece that houses the barrel and receiver. The polymer trigger housing assembly with linkage. Then the rear quick release polymer housing. This rear housing enables you to quickly get to your 10/22’s trigger assembly. Allowing easy access for cleaning and maintenance. 

  The main aluminum housing of the SRUNA is where a lot of the utilitarian features come from. This is the section of the chassis that houses the barrel and receiver. One nice feature on the Sruna is that it will work with almost any 10/22 receiver. This includes billet machined as well as standard style 10/22 receivers. This also includes ones with or without a top pic rail. Plus it works with left hand receivers too. This housing also features a full raised top rail for mounting optics or sights on. I found using standard AR 1.5” mounts put an optic at just the right height. The Sruna chassis does drop down a little where your cheek rests. It also has a padded sticker that makes it more comfortable for your cheek. At the front are 5 M-Lok slots located at each of the 3, 6, and 9 o’clock positions. These are useful for mounting whatever. SRU also gave the Sruna 2 M-Lok slots, on 45’s, at the very rear of the chassis. Mainly so one can attach something like a QD sling mount. The top housing also has various cut outs to save weight and make it look “cool”. Warning, if you use any barrel length, or combination of muzzle devices and barrel, shorter than 17 inches, the muzzle will be inside the cut outs and M-Lok slots. I am running a 16” Shaw barrel in this one, and you can see in the pictures that it is just a wee bit short.

  The trigger housing section of the SRUNA-22 is what makes this a really good bullpup chassis. SRU uses a sturdy trigger linkage system. This linkage system doesn’t flex much. That gives the user a really decent feeling trigger. The trigger housing system also includes a new trigger and safety. The safety allows you to keep the 10/22’s original push button safety on “fire”, because the Sruna trigger’s safety keeps the trigger from moving. The trigger housing has an extremely large trigger guard that houses SRU’s designed trigger. It is a flat polymer AR style trigger shoe with texture. I like the SRU trigger. The Sruna also uses an AR style safety. It comes supplied with a polymer one that matches the trigger’s style. I switched it out for a normal AR style one. So yes, the Sruna chassis will take most, if not all, AR style safeties. Including ambidextrous and different lever styles. It will also take a number of different style AR trigger shoes. Not drop in style, but the standard style, and just the trigger. Lastly, the Sruna’s trigger housing needs a grip. You have to supply the grip, but any AR style grip will work. I’ve had 3 different styles on this one. I ended up with a fairly vertical grip from Black Collar Arms. The vertical grip just seems to work better for me.

  On the bottom rear of the SRUNA chassis is the quick release section. This section slides over your 10/22’s trigger housing and the Sruna’s trigger linkage. It has a quick release pin at the bottom rear. Just remove this pin and you can slide this piece down and off. Be careful, because the trigger pin might fall out of the linkage. It also houses the rear buttpad and spacers. When it is off, you have access to the original 10/22’s trigger housing so you can remove the whole thing for cleaning. The quick release housing goes on and off smoothly. It does have a little bit of misalignment with the trigger housing when installed. This doesn’t affect anything, it just looks a tiny bit odd.

  The SRUNA chassis also has a few adjustment screws. I thought I would mention these as they align your barrel and receiver with the chassis. In the Sruna kit are these tiny set-screws. There are places on the chassis to install these. They slightly push on the 10/22’s receiver at the front, back, and bottom for alignment. They also help keep the receiver tight in the chassis. I just snugged them down and everything worked fine, I didn’t see any mis-alignment that needed adjusting on this one.

  The SRUNA-22 bullpup chassis is fun. It shortens up a 10/22 and moves the weight toward the rear. This makes it easier to support because the bulk of the weight is between your hand and your shoulder. It also makes it swing faster between targets. I put a bunch of rounds through it and it does have a few flaws, but they are minor. If you run a larger charging handle on your 10/22, it may interfere with the Sruna chassis’ ejection port cutout. The stock charging handle works fine, but it sits in a little farther, making it harder to use. One with a longer handle, but similar profile should work best. I filed down a larger round handle to fit. The other flaw is that the return spring for the trigger linkage adds close to 1.5 pounds to the trigger pull weight. So it makes a good trigger not quite as good. I also wasn't keen on the chassis pieces not lining up. Now for good stuff. The accuracy out of the Sruna is just as good as your 10/22 was before sticking it in the Sruna. This chassis also takes some AR parts, making it customizable to some extent. I enjoyed my experience shooting the Sruna, plus it looks awesome. 

  If you are in the market for something different in the 10/22 world, the SRU SRUNA-22 Bullpup Chassis might be worth looking into. It does everything a bullpup should do, like shortening the overall length while still giving performance. It doesn't add a bunch of weight and it is just something you don't see everyday. Head on over to SRU Precision and check out the SRUNA-22 kit. 

Firearms Insider Reviews - Key Points

Claim to Fame:

10/22 bullpup chassis system 

Target Market:

Anyone wanting a bullpup style 10/22

Features, Benefits, and Specifications of this product:

  • Compatible with all 10/22 variants except take down version

  • M-Lok slots at 3, 6, & 9 o’clock

  • Full top rail

  • Overall Length: 26.3” - 26.7” (With an additional butt pad, extends to 27.1”)

  • Length of Pull: 14.3” - 14.75” (With an additional butt pad, extends to 15.1”)

  • Chassis Weight: 1090g (38.5oz) (Ruger 10/22 wood chassis is approx. 950g)

  • Handguard Inner Width Compatible with suppressors or muzzle devices up to 1.299” in diameter

  • Upper Handguard: 6061 CNC Aluminum

  • Lower Frame material: PA66 Polymer

  • Trigger Linkage: SUS304 Metal Sheet Stamping

  • Butt Pad material: TPU

  • Cheek Pad material: EVA

  • Quick release chassis system 

  • Uses standard AR grips

What other aesthetic options or finishes are available?

Black, Tan, and OD Green 

What others are saying?:

Nothing found as of publishing

Link to other reviews:

Nothing found on Real Steel version (10/22 not airsoft)

Price point:

MSRP = $399 - $419

Retail = Same

I need it now! Availability:

SRU Precision

Our Rating:

Pros:

  • Good design

  • Takes standard AR grips

  • Works with left hand eject

  • Works with any 10/22 receiver 

  • M-Lok slots

  • Full top pic rail

Cons:

  • Misalignment between two parts

  • Increases trigger pull weight 

  • Screw height of top clamping screws

  • Some larger bolt handles may not work

Score: 7.00 Good

Favorite Link:  SARB-15 Bullpup Chassis Review 

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MDT LSS Gen 3 Chassis

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MDT LSS Gen 3

Chassis Review

  I am not a super precision rifle type of guy, but I do see the benefits of having a chassis system. That is why I was excited when MDT recently brought out their LSS Gen 3 chassis system. I had recently picked up a Bergara for review and knew the MDT chassis would be a great fit. I opted for “The Tactical” pre-configured LSS Gen 3.

  MDT has been updating chassis as the years go on. In fact, I have a LSS-XL Gen 1. Now they are on Gen 3 of the LSS chassis. What makes the LSS Gen 3 standout is its adjustability. Now you can purchase just the baseline chassis, with no buttstock and a small forend. Or, you can go all out and purchase different forends, different stocks, as well as pistol grip options. If you don’t want a stock, you don’t have to get one. The LSS Gen 3 is super customizable. 

  MDT also thought of something else with the LSS Gen 3. They have 3 pre-configured option packages: The Worker, The Tactical, and The Competitor. The Worker is the stripped down, lightweight version. The Competitor is the chassis you might want for shooting precision rifle competitions. Then there is the Tactical. I chose the Tactical for MDT to send out. It fits what I was looking for to install on the Bergara. So I will mainly focus on it, with some other stuff thrown in.

  Before I start on the Tactical, let me intrigue you with all the options one can choose on the LSS Gen 3. As of now, you get two color options, Black or FDE. You then choose your rifle’s action, there are plenty to choose from. Next you get to decide your stock interface. This is the only option that you need to choose if just buying the chassis by itself. There are three options: XTN (essentially MDT’s interface), Pic Rail (for folding stocks), and Carbine (Standard AR buffer tube). Then you can choose your stock, if applicable. If MDT doesn’t have a stock option you like, the LSS Gen 3 can accept just about any stock on the market. After you decide if you want a stock or not, you can choose what forend you want. As of now there are only two, the tactical and the competition. Lastly you can choose a pistol grip. Again, if you don’t like the options, any AR style pistol grip without a beavertail will work. 

  Now let’s get into the MDT LSS Gen 3 Tactical. The Tactical version comes pre configured with certain parts that make it feel more like an AR than a competition rifle. These include the forend, stock, and pistol grip, more on those later. The main Gen 3 chassis is the same across the board. It comes with some small polymer handguards attached to it. These can be used by themselves or removed to attach one of the other forends. This main chassis also has a built-in barricade stop on the front of the magwell. The Gen 3 chassis uses standard AICS pattern magazines. If you have a rifle that uses a blind or hinged magazine, it will convert it to use those AICS compatible magazines. To remove those magazines, MDT installed an ambidextrous mag release. Just push it forward with your trigger finger and the mags drop free. The Tactical model also uses the Carbine buttstock adapter so you can mount any AR buffer tube style stock to the chassis. MDT uses their Elite pistol grip for the Tactical version. This is an angled AR style grip with a soft overmold. 

  The forend on the Tactical version has some great features. First up, it has M-Lok slots at every 45 degrees. It also has a top picatinny rail out at the end of the handguard. This rail can be used to attach extra optics like night vision or thermal. This handguard has a long cut out toward the receiver. I believe this is so that larger optics will not interfere with the handguard. At 13.7” long, the tactical handguard gives plenty of room for attaching accessories like a bag plate or bipod. Since the Bergara I attached the Gen 3 LSS to only has an 18” barrel, it compliments the rifles “tactical” looks.

  Since the Tactical LSS Gen 3 uses a buffer tube style adapter, MDT supplies their top of the line carbine stock. The supplied stock is MDT’s SCS, or Skeleton Carbine Stock. This thing has more adjustments then I probably need, but they are sweet. On the SCS is an adjustable cheek piece that can quickly be adjusted with a thumb screw. The angle and location can also be changed by loosening some screws and re-tightening them. The actual buttpad interface has adjustments for the location on the buffer tube, as well as the angle, by also loosening screws. The buttpad interface is somewhat foot shaped with a flat bottom. It has an M-Lok slot at the bottom for attaching stuff. There is also a QD hole built into this foot for attaching a sling. Then there is a big thumb screw for quickly adjusting the length of pull on the buttpad. Along with the quick adjust screw, there are little thumb screws to lock this adjustment down. Then the buttpad itself can be adjusted up or down by loosening another little thumb screw. Even though there are a lot of adjustments with the SCS stock, it makes for a real nice interface between you and the rifle.

  I proceeded to mount up the MDT LSS Gen 3 Tactical to my Bergara Ridge SP in 308. I knew this would be the perfect platform. The Ridge only has a 18” barrel which makes it the perfect length for the Tactical chassis. Installation was pretty easy, just follow MDT’s instructions and use a torque wrench. Once installed I proceeded to take it to the range. Does the rifle shoot better because of the chassis? I couldn’t tell as this rifle shoots sub MOA with match ammo. But I do know that having the action sitting in a stable platform, like this chassis, will help with consistency. One advantage of the Tactical chassis, over the Bergara’s stock, is that the chassis won’t flex. I noticed this when trying out the built in barricade stop. The stock rifle didn’t even have one, but the MDT’s built in stop seemed to work pretty good. I also stuck on a bipod using one of the bottom M-Lok slots. The M-Lok slots are very useful, as is the top pic rail. To round out the handguard I installed some FDE Nile grip panels from Walker Defense. They match well, but more importantly is that they give a great grip to the smooth handguard of the Tactical chassis. My only complaint about the chassis is its weight. This could be a plus or minus in your mind. Heavy is better for a precision rifle, but light is better for a tactical rifle, at least in my opinion. Since this is labelled as “Tactical”, I was hoping for a pound or two less. However, If I were to just put a standard AR stock on it, it would lighten it up a bit. But then you would lose all the adjustability in the great SCS stock. So choose for yourself what you want, which is really the best feature about the LSS Gen 3. 

  If you are thinking about getting a chassis for your rifle, MDT makes some of the best out there. The LSS Gen 3 makes it possible to get just what you want, or don’t want. You get to choose. Or if you just want a pre configured chassis, like The Tactical, they have that too. I have been very pleased with the MDT LSS Gen 3 Tactical chassis. It makes the rifle look and shoot great. Go take a look at it over at MDT.

Firearms Insider Reviews - Key Points

Claim to Fame:

Configurable chassis

Target Market:

Those wanting a precision chassis that gives them options

Features, Benefits, and Specifications of this product:

  • 5.74 pounds complete for “Tactical” version

  • 2.2 pounds chassis only

  • Interchangeable Forends

  • Customizable Buttstock Interface

  • Interchangeable buttstocks

  • AICS Magazine Compatibility

  • Ambidextrous Magazine Latch

  • V-block bedding

  • Barricade stop

  • Compatible with AR-15 style grips

  • Compatible with M-LOK thumb shelf

  • Action stays in chassis when changing forend & stock, maintaining zero

  • 6061 aluminum construction

  • Cerakoted Black or FDE

  • 1.25” barrel channel

What other aesthetic options or finishes are available?

Also can be had in basic black, but the options are too many to list

What others are saying?:

Nothing found as of publishing

Link to other reviews:

Tactical Gear Guy  

Price point:

MSRP = $459.90 - $1509.75

Retail = $1059.75 as shown in Tactical Kit

I need it now! Availability:

MDT, MidwayUSA, or OpticsPlanet

Our Rating:

Pros:

  • Configurable aluminum rifle chassis

  • Ways to mount just about any buttstock

  • Interchangeable forends

  • Uses AR pistol grips

Tactical Kit Pros:

  • Multiple M-Lok slots

  • Multi-adjustable stock

  • AR style buffer tube adapter

Cons:

  • Can be heavy (Good or Bad depending on set up)

Score: 8.50 Great

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Strike Industries SMC Bravo Chassis

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Strike Industries SMC Bravo

Chassis Review

  Today, we're taking a look at the Strike Industries Bravo Chassis designed for the Sig Sauer P320. I received this chassis from Strike Industries, and since I had a P320 Compact sitting around, unused—not due to reliability issues, but simply because I didn't like how it felt or shot. I decided to reach out to Strike Industries for a chassis to create an interesting range toy.

Upon receiving the Bravo chassis, I realized I needed a few additional parts to complete the build. So I headed back to Strike Industries to purchase their pistol brace, compensator, and blast shield. I also contacted the team at XS Sights for a set of tall tritium suppressor sights that illuminate brightly. Now, back to the chassis itself, everything necessary to complete the build was included in the box. Including the chassis and a new back plate with a charging handle for easier operation.

  I opted for the FDE version of the chassis and mixed in some black components to enhance its appearance. The SMC Bravo stands for Strike Modular Chassis, and it's a lighter alternative to the Alpha system. Made from Polymer Extreme, it’s both durable and lightweight. This chassis is designed to accommodate the fire control unit and offers ample rail space for accessories. From the grip upwards, it features a flared mag well for smoother reloads. The frame includes a built-in gas pedal for improved stability, quicker follow-up shots, and better control. The rear back strap is integrated with a 1913 rail for attaching your preferred brace. Additionally, there's a molded QD socket for a quick-detachable sling system, making this chassis a versatile platform for a PDW, SBR, or any creative setup you envision.

  I added a spare magazine holder to the front, which provides quick access to an extra magazine and offers a place to index your hand. The takedown lever is a standard OEM part, and installing the trigger package was straightforward, as it is designed to accommodate both OEM and aftermarket trigger units. The Strike Bravo chassis is compatible with all P320 slides, but if you plan to use a shorter compact slide, a threaded barrel and compensator will be necessary to manage the muzzle blast. You can utilize P320 17-round, 21-round, or larger magazines. While it’s claimed that the chassis fits a variety of holsters, I've chosen to carry mine in a sling bag without a round in the chamber, as I find it would be too bulky in a holster. 

  At the range it was a pleasure to shoot. It was great having a third point of contact to stabilize the pistol. I was able to easily hit targets at 50 yards with iron sights. I had no issues with the reliability of the system. Everything on the system was either Strike Industries or OEM Sig parts. 

  As with Strike Industries and their website, there is very little technical information or specs on the product. I would like for Strike Industries to add size and width, blah blah, to the product specs. Overall I like their system. I don’t think it is a viable option to a traditional pistol when being worn in a holster. I do think it is a viable option of being a truck gun, backpack, or sling bag firearm. Home defense would be a plus as well. Their Bravo chassis opens itself up to give you a platform to go from mild to wild. I think it was clearly made well, the price for the chassis is on point, but to add all the other accessories, it gets a bit pricey. 

Firearms Insider Reviews - Key Points

Claim to Fame:

A chassis system to advance the P320 platform 

Target Market:

Those who want a pistol braced pistol 

Compact design 

Those who want a truck or tractor firearm that’s compact 

Features, Benefits, and Specifications of this product:

  • Uses Sig P320 FCU

  • Material: Polymer Extreme

  • Built in Magwell

  • Extended front picatinny rail

  • Rear QD socket

  • Lightweight 

  • Durable 

  • Open platform 

  • Ergonomic 

What other aesthetic options or finishes are available?

Three different colors available 

Ambidextrous charging handle 

Tons of different variations and configurations 

What others are saying?:

Quick and smooth 

Turning with the system is a breeze

Turns your firearm into a pistol with a brace. 

Link to other reviews:

Gun Values Board

Price point:

MSRP = $129.95

Retail = Same

I need it now! Availability:

Strike Industries

Optics Planet  

MidwayUSA  

Our Rating:

Pros:

  • Built in features like QD pocket 

  • Generous rail space 

  • Modular design 

Cons:

  • I’m concerned about the rail on the back to place a brace or stock. Only time will tell

  • Limited optic mounting options 

Score: 7.00 Good

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SRU SARB-15 Bullpup Chassis

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SRU Bullpup Chassis

Review

  SRU Precision has brought out some pretty nice AR bullpup conversion kits. If you have been thinking about getting a bullpup, the SRU kit might be the way to go. The SRU AR15 bullpup chassis comes in a number of configurations to help you choose the right system for you.

  To sum up the SRU Bullpup Chassis, it is a 2 piece shell that wraps around an AR15. Not the full AR, just a mil-spec receiver and an upper. There is a stipulation on the style, or type, of upper receiver you use. A standard one can be used, but you will need to get a short recoil system. If you do not want to go this route, any bufferless upper should work. These include the Jakl, BRN-180, or what I used, the Foxtrot Mike Gen 2. The 2 piece shell is made from a carbon fiber infused polymer, which gives it extra strength and rigidity. 

  Installation of the SRU chassis can be time consuming. There are a lot of screws and pieces that hold the SRU Chassis around the AR lower receiver. Using the Foxtrot Mike upper made it a little bit easier. Luckily SRU has some detailed online instructions. Let’s just say that this is not the easiest kit to assemble. First, you have to take out most of the SRU Chassis’ screws. Then you will have both sides apart to start putting in the parts. Next install the short buffer tube into your lower receiver with the proper parts for your chosen upper. Then install the lower receiver assembly into the chassis. Make sure you have removed the trigger guard from the bottom of your receiver, or the SRU chassis will not work. Adjust the trigger travel screw. The SRU chassis uses a trigger linkage, which is why it needs adjustment. There is also a QD forward mount that needs to be installed and adjusted. This forward mount holds the bottom of the upper receiver in-line with the chassis. Now you can reassemble the two halves. Trust me, I simplified this for the review. I probably had the chassis apart 3 or 4 times to get all the parts adjusted correctly.

  The trigger system is what really makes the SRU Bullpup Chassis shine. Since the SRU kit uses an aluminum trigger linkage, you get a good trigger. Bullpups are notorious for having bad trigger pulls, but SRU seemed to solve this problem. Another advantage to the SRU kit is that you can choose any AR15 trigger to install. That is because the trigger is actually in your AR receiver at the rear of the bullpup. The SRU kit does add about 1 pound to the total trigger pull weight. I used a Black Talon Tactical 3.5 pound trigger and it ended up right at 4.5 pounds. SRU made the chassis with a flat trigger and a single sided safety. These are pretty decent. If you do not like them, you can change them out for any mil-spec trigger shoe or any AR safety that you like, including ambi ones. You can also take the triggers pre-travel out by shimming it, the instructions just don't explain how to keep the shim in place. 

  The SRU Chassis does not come with a pistol grip. This is not a big deal. I installed a Thril pistol grip because I like them. Even though it worked well, I soon realized that a more vertical grip would work much better. This is because there is not much room between the pistol grip and where the chassis drops down to accommodate the magazine, and the magazine itself. It is pretty minor, and I still have the Thril grip on it. I also found the length of pull to be long. SRU states 15.3 inches, which seems about right. If you have short arms, it might be harder to reach the trigger than with a standard AR. 

  I should probably mention a few differences when using the SRU chassis. The mag release comes to mind first. It uses a lever style behind the magazine, similar to an AK style. It works well for me, but it did take some getting used to. Another thing to note is that you may need a higher than usual optics mount. This is because your cheek rests on top of the receiver, on the little pic rail cover SRU supplies. First I mounted up a red dot. Then I went to the ZeroTech Thrive HD 1-8 in a standard cantilever mount with a riser. Lastly, a 1.93 Geissele mount was added. It put the scope up high enough to use without a riser. 

  Foxtrot Mike was kind enough to send me the upper for the SRU Bullpup. That way I could just drop in the upper and not have to worry about short stroke kits. The upper Foxtrot sent is their brand new monolithic style upper receiver. It uses their forward charging system and a built-in buffer/spring recoil system. This particular monolithic system uses a 1 piece barrel, gas block, and barrel extension. It also uses a 308 size bolt for more strength. The Foxtrot upper has a full 16 barrel and comes with a threaded on A2 flash hider. This system with the SRU chassis made a really nice bullpup. The barrel sticks out just far enough so that you do not feel like you are going to shoot your hand off. 

  Now it is time for the love-hate experience. Okay, more love than hate. I was not sure how I would like this bullpup in the beginning. It surprised me. I really like how compact it is. The forward charging upper with the SRU kit makes it easy to cycle with the gun up on your shoulder or while running the gun. Magazine changes are fairly quick, even if I can do an AR mag change faster. The whole thing weighs 7.25 pounds without a mag or optics. So it handled pretty decently for me. Plus the weight is toward the rear, so you are not trying to swing a heavy weight back and forth between targets. Since I did not shim the trigger, there is a bit of take up before you get to the trigger's break. I just did not want to take it apart again to shim the trigger. You will also notice in the pictures that the scope mount is turned around backwards. This was done on purpose so that the physical mount would not get in the way of the forward charging handle. You can turn it around to the normal position and it will work. I just didn’t like my hand rubbing on the mount. 

  If you like bullpups, or maybe just want to try one out, the SRU Bullpup Chassis kit may be a good fit. The quality of the kit is top notch. It probably has one of the best bullpup trigger systems around, at least in how it feels. The polymer chassis feels good and not cheap. I ended up really liking the SRU bullpup chassis. Head over to SRU and check it out.

Firearms Insider Reviews - Key Points

Claim to Fame:

Bullpup conversion for AR15 rifles

Target Market:

Anyone wanting a top quality bullpup 

Features, Benefits, and Specifications of this product:

  • LOP: 15.3”

  • OAL with 16” barrel AR15: 26”-29”

  • Kit OAL: 20” (without handguard) / 25” (with handguard)

  • Weight: 980g (without handguard) / 1320g (with handguard)

  • Shell: PA66+CARBON FIBER injection molded

  • Trigger Linkage System: 6061 T6 CNC machined

  • Short Buffer / Sling Mount Endplate: 6061 T6 CNC machined

  • Trigger / Safety Selector / Mag Latch / Rail & Front Adaptor: Metal Polymer

  • Stock Recoil Pad & Cheek Pad: TPU

  • Optional Front Handguard: Steel stamping

  • AR-15 Lower Receiver: Mil-Spec only

  • AR-15 Upper Receivers:

    • Bufferless complete upper, e.g., BRN-180 / FM-15 / JAKL

    • Mil-Spec Upper + short buffer BCG, e.g., DFA MCS 2.5” BUFFER / LAW TACTICAL ARIC / CMMG 5.56 to .22 conversion BCG

What other aesthetic options or finishes are available?

Black, Tan, with or without handguard

What others are saying?:

Nothing notable as of publishing

Link to other reviews:

Recoil Web  

Price point:

MSRP = $429.99

Retail = same

I need it now! Availability:

SRU Precision

Our Rating:

Pros:

  • Uses mil-spec AR lower receivers

  • Uses any AR15 trigger

  • Trigger system is top notch

  • Compact

  • Decent design

Cons:

  • Assembly can be tedious

  • Needs tall optics mount

  • Long length of pull

  • Extra safety selector at rear of rifle

Score: 7.50 Good

Favorite Link:  Foxtrot Mike FM-15 review   

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TIMBER CREEK ENFORCER 10/22 CHASSIS

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TIMBER CREEK

ENFORCER 10/22 CHASSIS REVIEW

  We all go down rabbit holes sometimes, especially when we start trying to modify our firearms to be a symbol of ourselves. Well I did this with my Ruger 10/22. It took me a year to almost finish the build and I am now close to 100% complete with it. I received a Timber Creek Enforcer Chassis for the 10/22 rifle, as the title entails. Right off the bat I noticed that I had gone out to left field and was in trouble. So I put the chassis on the rifle and noticed that it was a lot lighter than my original wood stock version that came on my varmint edition rifle. I started making a list of things to change that would make the chassis suited for what I thought it deserved. This is the beginning of the rabbit hole. 

  The Timber Creek chassis itself weighs around 22 ounces. Now I don't know what a wood stock weighs but it is a heck of a lot more. The rifle with the original barrel seemed a little unwieldy. It had a long barrel so the forearm for the chassis system seemed short. This is where I ordered a new barrel from Byers Barrels. This barrel was a liner type, ultralight 16.5” barrel. This made the rifle better. Well I soon realized I needed a trigger system and reached out to TandomKross. I then received a trigger pack from them. I thought the 10/22 was complete, not hardly. Well, I needed an ultra light bolt, lightweight scope mounts, extended charging handle, and a Vortex optic. Now here is the fun part, do I use a buffer tube or does it need a folder on it? So stand by and I will tell you.

  The Enforcer chassis is a skeleton style system that is straightforward to install on any of the standard 10/22 rifle systems. Just take the barrel and action out and drop it in the chassis. Use the screws that come with it and you're done. Install your favorite AR style grip, then you get to decide how to finish off the rear of it. It has buffer tube threads on the rear, so you can install a tube and your favorite stock on the rear. I opted for a screw in folding adapter that I ordered for a TC rifle years back. I installed a buffer tube and a stock I had laying around. 

  Now to the good stuff and out of the rabbit hole. The chassis is machined out of aluminum and machined very well I might add. It has M Lok slots machined at the 3, 6 and 9 o'clock positions for your favorite accessories. The chassis up front has a lot of machined holes to decrease the weight. Where the forearm meets the main body, it is machined at an angle and has 4 lines machined in it. I assume this is for resting the rifle on a barricade, a limb, or what have you to get a stable shooting position. Down the side it is a little thicker, this is where the action drops in, yet it is angled and radiused for a smooth feel. The rear of the system has direct holes machined through it. What for? I am not sure, but it is cool looking. Then the end has the threads for the buffer tube.

  The Timber Creek Enforcer 10/22 chassis comes in numerous colors from mild to wild. I opted for just the plain black anodized color. Timber Creek also has systems for numerous other style rifles, like the Remington 700 and AR 15. The website does not have all the specs that I would usually add to the review. I can tell you this chassis turns your rifle to a top notch plinker or something that is ready for your local .22lr precision match. This chassis system is just the base for what you can do. It is a great foundation to build a 10/22 to your heart's content. The only thing lacking here is your imagination for when you get started building. Again, I am not completely done with mine because there is always something more to add to it. 

Firearms Insider Reviews - Key Points

Claim to fame:

Lightweight chassis system

Turns the ordinary rifle into a different style rifle

Target Market:

People that want AR style in a non AR rifle

Those that want personality in their rifle

Competitive shooters

Those whose choose quality and value

FNBs (Features & Benefits of this product):

  • Quality machined aircraft grade aluminum

  • Hard anodizing or Cerakote finish

  • Easy installation

  • Weight: 1.4 pounds

  • Uses AR buffer Tube

  • M-Lok mounting slots

What other aesthetic options or finishes are available?

Numerous different colors

What others are saying:

First Impressions

The moment you pick it up, you can feel the premium quality. Made from lightweight, aircraft-grade aluminum, the Enforcer chassis doesn’t just look good—it’s built to perform. And the anodized finishes? Chef’s kiss. Whether you’re into sleek black or want to make a statement with vibrant red or blue, Timber Creek has styles for everyone.

Link to other reviews:

Nothing found as of publishing

Price point:

MSRP - $399.99

I need it now! 

Timber Creek Outdoors or Optics Planet

Our Rating:

Pros:

  • American Made

  • Lightweight

  • Great customer service

  • Easy installation

Cons:

  • I feel it needs a longer forearm

  • Website is lacking specs

Score: 8.00 Great

Strike Modular Chassis (SMC)

  After using the Strike Industries Strike Modular Chassis for the Sig P320, I am finally letting you know my thoughts. The Strike Modular Chassis - Alpha series, or SMC for short, is made to drop in your Sig P320 fire control unit and slide. This gives you a more controllable platform with a bunch of different accessory options. 

  In the box with the Alpha series Strike Modular Chassis are a bunch of other accessories. You may or may not choose to use them, but they are there. Of course there is the Alpha series SMC. But along with the SMC is an optics platform, a side charger adapter, a set of gray grip panels, and an angled front grip that also will hold an extra magazine. Various screws and allen wrenches are also included to install all that stuff. There are also some added bonuses. Like a mini figure SMC for those brick toys, a SMC patch, and a SMC pin. Those little add-ins are pretty cool.

  I’ll try to explain the SMC to you, but the pictures may explain it better. It is machined from 6061-T6 aluminum, so it’s not your Grandma's plastic grip. As it sits, it looks like a pistol frame with an extension running off of the back. The extension has some QD’s on it, along with a vertical picatinny rail for attaching stuff, like a pistol brace, when they become legal again. Along this extension is also where the raised optic platform mounts. Up front is a standard picatinny rail section for attaching lights or the supplied angled foregrip/extra magazine holder. Oddly enough, there is also a hole through the front pic rail which is used to mount compensators, more on that later. 

  At first, I dropped my P320 FCU and a full length 4.7” slide into the Strike Modular Chassis. The FCU slid in pretty easily, but still fit snug. This slide had an optic already mounted to it, so I left it for the time being. I also installed the charging handle on the rear of the slide. One basically swaps out the backplate and then screws the charging handle on, on whatever side you want to use it on. Strike Industries also sent me their Dual Folding adapter, or folding brace. So I installed this on the rear pic rail. This was before using a brace was a problem. I also installed the foregrip. I shot it a while in this configuration. I might mention that where the rear pic rail is on the SMC, it has a “U” shaped cut-out, so you can see your iron sights or slide mounted red dot easier. While using this config, I did notice that the changing handle rubbed a little bit on the side of my optic. The charging handle moves with the slide, so it doesn't rub along the optic, it just rested up against it, causing the vibration of the firearm to rub a little wear mark in the side of the optic. The charging handle really did make it easy to cycle the slide, I can see why Strike Industries now offers it as a stand alone product. Other than the rub mark,  I was pleased with how the SMC was working.

  After a bit, Strike Industries sent out some more accessories to attach to the SMC. They sent the Magwell, Blast Shield, and 2 compensators. I immediately installed the Magwell as it makes reloads easier. I also installed the Blast Shield. The blast shield mounts up on the front pic rail. It gives the slide some “shields” to keep muzzle blast at bay. It also protects your hands when using one of the compensators. The Blast Shield has a lower pic rail also, so rail attachments can still be used, they just sit slightly lower on the firearms frame. I couldn’t immediately install the comps, because I needed a carry length slide with the 3.9” barrel. Zaffiri Precision was kind enough to help me out with one so that I could use the compensators.

  The compensators come in two sizes, a Small and Large. The Large one has more mass and more ports, but it also is longer so it sticks out past the blast shield or dust cover. The Small comp is flush with the blast shield and barely sticks out past the pistols dust cover. Both of these comps are for non-threaded barrels only. This makes the comps 50 state legal. The comps come with a screw to mount them. They mount through the SMC’s dust cover in that previously mentioned hole. Just slide the comp into the SMC and tighten the screw. These comps will only work with the SMC and a 3.9” slide/barrel. I tried out both the comps and really liked them. The Large version seemed to reduce recoil and muzzle rise better than the Small one. But don’t get me wrong, the Small comp still did an excellent job, the Large one just worked a bit better. I would choose the Zaffiri compact slide and Small comp combo when the SMC is configured as just a stand alone pistol. 

  The Strike Industries SMC doesn’t come without problems. Since the SMC is a modular style chassis, it screws together in places. Mainly where the backstrap slides in. At the top, there are 2 tiny screws to hold it in place. These 2 screws loosen up and can strip the frame holes out. Strike industries now says to use “red” loctite 272 on these. They still loosened up on me and one of the screw holes completely stripped out. Luckily it was on the side where a longer screw can go. So I put a screw with a nut on it and it works fine now. Once I figure out which backstrap I want to permanently use, I will be doing something semi-permanent. So if you get one of the SMC’s, use a red threadlocker on these screws and check the tightness of them after every use. The backstrap, where the web of your hand meets it, is flat. This flat makes the pistol rub your hand a bit. If Strike Industries were to round this out, the SMC would be way more comfortable in your hand, especially after a day of hard use.

  When I switched to the compact slide and compensator, I also started using the raised optics mount. The raised optic mount has mounting holes for just about any mini or micro pistol red dot, like an RMR, Shield, etc. The red dot mounting seems pretty high when you look at it, but when you are using it, it works well and doesn’t seem too tall. I really like how it has the ability to mount just about any optic.

  The Strike Modular Chassis is a unique addition to your Sig P320. It gives you abilities that the stock P320’s don't. The fixed, non reciprocating optic mount works well. The compensator options are great. Having an angled front grip that houses an extra magazine is very useful, especially since you can put a 30 rounder in it. The screws that strip out are a big downer for me. But as a whole, the Strike Modular Chassis is a fun and useful addition to a Sig P320.

Firearms Insider Reviews - 8 Key Points

Claim to Fame:

Chassis system for Sig P320 handguns

Target Market:

Those wanting to convert their Sig P320 into a pistol caliber carbine or SMG style pistol

FNBs (Features & Benefits of this product):

SMC ALPHA BASE:

  • Over 20+ configurations

  • Included Ambidextrous Side Charging Handle with Slide Cover Mount

  • SMC Rear Module Backstrap 

  • SMC Multi-Optic Mount (Footprints: C-More, DeltaPoint Pro, Docter/Noblex, RMR, Shield and all SIG SAUER Open Reflex Sights)

  • Ambidextrous QD sockets located on SMC Rear Module Backstrap

  • Picatinny rail located at front bottom of chassis and on Rear Module Backstrap for accessories

  • Spare Magazine Holder for SIG SAUER P320 with SI Modular Magazine Release is included

  • Uses SIG SAUER P320 OEM fitment takedown lever and P320 magazine release, SI Modular Magazine Release is pre-assembled and included

  • Machined from 6061-T6 aluminum

SMC COMPS: For use with 3.9” slide and non-threaded barrel

  • Small and Large sizes

  • Mount into SMC, not on slide

  • QPQ coated

  • Recoil reduction

  • 50 state legal

MAGWELL:

  • Flared magwell for easier magazine insertion

  • Improved grip support

  • Lightweight

  • High-strength impact resistant custom blended SI Polymer

BLAST SHIELD:

  • Shield thumb from muzzle blast and heat

  • Redirects muzzle blast forward and upward

  • Add additional Picatinny rail length to for attaching accessories

  • Quickly dissipates heat due to aluminum’s good thermal conductivity

  • Fits 1913 Picatinny rails

  • Machined from 6061-T6 aluminum

What other aesthetic options or finishes are available?

Lot’s of add on features

What others are saying?:

Nothing really found except full reviews

Link to other reviews:

The Firearm Blog  

Price point:

MSRP = $549.95

Comps = $59.95 - $69.95

Blast Shield = $39.95

Magwell = $19.95

Retail = $539.95 at Primary Arms  

I need it now! Availability:

Strike Industries or Primary Arms

Our Rating:

Pros:

  • Includes various mounting screws to mount optics

  • Foregrip with extra magazine

  • Picatinny Rail for mounting stocks or braces

  • Built in QD points

  • Raised optic platform

Cons:

  • Screws strip out or loosen up, even with red thread locker

  • Pistol grip could be more rounded up by the web of your hand

  • Charging handle can rub on slide mounted optic

  • Price

Score: 6.50 Okay 

If the 2 rear screws didn’t loosen up or strip out, the score would be much higher

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