Chad Wallace

September 12, 2022

Walker Defense Titanium BCG

Chad Wallace

September 12, 2022

Titanium bolt carrier groups (BCG) are one of the mysteries of the AR world. A few companies manufacture them, but what are they really for? I’ll try to answer that with the Walker Defense Research Titanium BCG.

If you are looking at a Titanium (Ti) BCG, like the Walker Defense one, it is probably because of weight. Meaning you are trying to get the lightest possible parts around. The Walker Ti BCG weighs 7.8 ounces complete. A standard BCG weighs 11.8 ounces on my scale. That’s an off the shelf weight saving of 4 ounces. I know, that doesn’t seem like a lot, but when every ounce counts, that's a bunch. An important note is that the bolt is not titanium, it is 9130 steel with a Nickel Boron coating. The bolt is also magnetic partical inspected (MPI). A Ti bolt just doesn’t have the correct metallurgy to work, but for the carrier, it’s great. The Ti carrier, without the bolt, only weighs 5.7 ounces.

The Walker Defense Ti BCG is of the standard M16 profile. This is done so that it will work in almost every scenario, except piston guns. It is for direct impingement AR’s only. The M16 profile also gives the BCG strength and reliability. Cutting away material can weaken a BCG or make it not function correctly. Walker makes the BCG out of 6AL-4V grade 5 titanium. This even goes above my material knowledge, but I bet that they know what they are doing, especially since this titanium seems to be the standard for Ti BCG’s. An Ionbond Diamond Like Carbon (DLC) is then put on the carrier. This DLC coating gives the BCG a longer lifespan and makes it super smooth. Of course you need excellent machining to have a smooth coating, and the Walker Defense BCG definitely is machined super smooth.

Another reason for choosing a titanium BCG is for reduced recoil. The Ti BCG reduces recoil because there is less moving mass. This does come at a price. One also needs an adjustable gas block. This is a must for any lightweight BCG, not just the Walker Ti one. Then you have to tune the adjustable gas block. Good ones come with instructions on how to do this. Some might say that you can “tune” the Ti BCG by using heavier buffers and stuff. But a heavier buffer just adds more weight and more recoil. Isn’t one reason you would choose a Ti bcg is for weight? I can attest to the lower recoil of the Ti BCG. I have a Superlative arms adjustable gas block, tuned to eject the brass at about 3:30. According to the Mantis x, it reduced muzzle rise by over 50% and recoil width by over 80%. You can see in the short video that even with an A2 flash hider, there is hardly any recoil or muzzle climb. I could definitely feel the difference.

I was a little hesitant to try the Walker titanium BCG out. I just didn’t understand why I needed it. After using it thoroughly for some time, I can say it definitely makes the AR shoot so much smoother. All the claims are correct. Reduced muzzle rise. Reduced felt recoil. Faster follow up shots, due to those previously mentioned reductions. Yes, the BCG price can make you gasp a little. But in the end, it’s not much more expensive, if any, than other low mass BCG’s. Even some enhanced BCG’s are in the $250 range. The Walker Ti BCG also has forward assist notches, something a lot of the other lightweight carriers don’t have. For me, I just can’t get over how smooth the recoil impulse is with the Walker Ti BCG.

Probably the last reason to choose Walker’s Ti BCG is durability. Titanium tends to be more resistant to heat and pressure. What do direct impingement guns have? Hot gasses being directly blown into the carrier. So anything that is more resistant to heat is a good thing. Walker also correctly stakes the gas key on, so it won’t be moving around causing problems. Just lube your Ti BCG as normal, and you should get a long life span from it.

The Walker Defense Titanium BCG does everything a BCG should do and more. The “more” is why I really like it. It’s lightweight, reduces recoil, is durable, and has a standard M16 profile. Hopefully you have a better understanding of why you would want the Walker Ti BCG. So if you want that “lightweight everything”, or just a super quality bolt carrier, head over to the Walker Defense Research website and give them a look. Everything I have from Walker is top notch and is always made in the USA.

Firearms Insider Reviews - 8 Key Points

Claim to Fame:

Lightweight M16 FA Bolt Carrier Group

Target Market:

Lightweight builds, competition shooters, or anyone wanting a high quality BCG

FNBs (Features & Benefits of this product):

Compatibility: M16/ M4 / AR-15 Direct Gas Impingement (not for use in piston guns)
Calibers: 5.56x45mm NATO / .223 Remington / .300 AAC Blackout
Profile: Full Auto Style Carrier w/ Properly Staked Gas Key
Carrier Material: 6AL-4V (Grade 5) Titanium
Bolt Material: 9310 Steel
Carrier Coating: Ionbond DLC (Diamond Like Carbon)
Bolt Coating: Nickel Boron
Firing Pin: Steel w/ Chrome Finish
Made in the USA
Weight: Carrier-only (titanium): 5.7 oz, Total (Carrier, Bolt, firing pin, etc.): 7.8 oz
Adjustable gas block is highly recommended

What other aesthetic options or finishes are available?

Carrier only

What others are saying?:

5/5 stars at Walker Defense

Surprisingly Good

When I decided to upgrade my mil-spec bolt carrier group ("BCG"), I did a lot of research. I found a review of the Walker Defense Research BCG on Pew Pew Tactical. I was impressed by the statistics . I there and when I went to the site, found the NERO, a three-d printed muzzle device. I was impressed by the willingness to explore new technologies. I bought both a NERO and this BCG. I have a JP captured spring and a Superlative Arms adjustable gas block. With the mil-spec BCG, I could only tune the rifle to 1.5 turns into bleed (22 clicks on the detentes). It was a good result. The Walker DR BCG allowed me to bleed off another 1.5 turns (28 clicks). Because of that, I have extremely little barrel movement and keep my targets well (understand that the NERO is not on this rifle so there is no effect--this is strictly the BCG. With less mass, there is less slam. Whenever I take it to the range, others notice the smoothness and my targets. I have offhanded 120 rounds at a session and it is only my wallet that caused me to hang it up in a session. Two other things to mention: 1) my clockworks stay noticeably cleaner because I am able to bleed off so much dirty gas; and 2) the coating quality goes all the way out to the edges. This second issue needs a bit more explanation. On the mil-spec BCG the edges wore nearly immediately. The quality of the finish is so good that the edges remain crisp at 1,250 rounds. I have no reservations about recommending this BCG. I would suggest that you take full advantage by getting an adjustable gas block as well. The two together really make the gun a sweet shooter. My sons have various ARs but they always find an excuse for shooting mine.

Link to other reviews:

Nothing found

Price point:

MSRP = $359.99

Retail = $306.00 with “INSIDER15” discount code

I need it now! Availability:

Walker Defense Research

Use “INSIDER15” FOR 15% OFF

Our Rating:

Pros:

Super lightweight
DLC coating on carrier
Nickel Boron coating on bolt
M16 Full Auto carrier specs
Super smooth operation
Less felt recoil
100% Made in USA

Cons:

Price
Needs adjustable gas block

Score: 8.50 Great

Favorite Link: JSD Supply

Chad Wallace

January 1, 2020

Review, Walker Defense

Walker Defense NERO 556 muzzle brake

Chad Wallace

January 1, 2020

Review, Walker Defense

Walker Defense has come on the market with some truly innovative products. One of those is the NERO 556, a 3D printed hybrid muzzle brake/compensator manufactured from Inconel.. By using state of the art 3D manufacturing, Walker Defense was able to design the NERO without the constraints of normal machining. I had watched one of their videos on the NERO and needed to see if it was really that good, so I reached out to them for a review sample.

3D manufacturing brings a whole new level to muzzle brakes. Walker Defense uses an additive manufacturing process called DMLS (Direct Metal Laser Sintering). Basically this process uses a laser to melt powdered metal together. By using this process, Walker Defense was able to design a muzzle brake that doesn’t have to use standard machining processes. Instead, they designed it using fluid dynamics for the best possible reduction in muzzle rise and recoil.

The NERO 556 is manufactured using inconel. Inconel is a superalloy known for its resistance to heat, pressure, and corrosion. You may have heard about inconel because some suppressor companies use it for the initial blast baffle. Inconel is not the easiest metal to machine and thus can add a huge cost. By laser sintering the inconel, costs can be kept down some.

Walker designed the NERO for zero muzzle rise. It is optimized for a 14.5” or 16” 5.56 (.223) barrel length. If you run it on a shorter barrel, it definitely pushes the muzzle down. I know this because I tried it on a 11.5” and a 7.5”. It does this because the pressure going through the NERO is much larger on the shorter barrels. Walker Defense actually sent me a cutaway diagram (see picture). The diagram helps to understand what is going on with the NERO, and why it looks the way it does. As Walker Defense mentioned:

“It (nero) was designed using fluid dynamics to force the gases to take a different trajectory than the bullet. Upon entering the muzzle device, the vectored flow nozzle (#1) acts as an inverted ramp, and along the dimpled compression ramp (#2), focuses a jet of gas into the curved blast surface (#3) directly below the bore. This focused gas striking the curved blast surface is intended to create a balanced counter-recoil force that directly counteracts the rearward and upward recoil with a downward and forward counter force.”

Now that we know the technical description, here is my take. The NERO 556 works like nothing else I have ever used before! Like I mentioned earlier, I did try it on a 11.5” and 7.5”, but most of the use was on a 16” barrel. Running the NERO on the 16” did exactly as stated. Recoil was reduced extremely. Most importantly, muzzle rise was effectively eliminated. The recoil impulse almost felt as if it was slightly pulling away from my shoulder. When I tried it on the short barrels, results varied. On the 11.5”, recoil was reduced and the muzzle dipped a little during recoil. On the 7.5”, recoil was reduced also, but more importantly was the huge downward force pushing the muzzle down. I would recommend also running it on a 14.5” or 16”, as it was designed for that. With the shorter barrels, there was also more concussion from the blast. With the 16”, I didn’t really notice it, as it is less than other muzzle brakes I own. While shooting a standard USPSA target, at ranges from 5-25 yards, A-zone hits were really easy. Even when I shot really fast, the muzzle stayed on target and the hits were all on the target. FYI, the AR15 that the NERO resides on weighs in at 6 pounds empty.

Walker Defense also noted about handling the rifle differently. When shooters use the NERO for the first time, some have a tendency to pull the muzzle down during recoil. With the NERO, this is definitely not needed. Since I was warned about this, I literally shot the rifle with the handguard resting on a flat hand, after first installing the NERO. Yes, it shot very flat with no support. However, I did go back to my standard grip without any problems.

I was trying to measure recoil and give a comparison, but the data wasn’t there. I did get a few decent readings on muzzle rise (see attached screenshots). The last one in the group is always off because I moved the rifle after the last round was fired. All of the ones I have are in the standing, off hand, position. The average muzzle rise is near zero. This is consistent with what Walker Defense say about the NERO.

The NERO 556 may not be for everyone, but it should be. If you are a competitive shooter, you need this. If you just want reduced muzzle climb, you need this. If you want faster follow up shots, this will definitely help. The NERO may seem pricey at first, but after shooting with it, you will probably change your mind. The videos put out by Walker Defense really are how the NERO shoots.

The NERO is definitely innovative. Just by looking at it, the NERO 556 doesn’t look like your normal compensator/muzzle brake. Well, it isn’t, thanks to the 3D design and sintering. If you want an awesome, recoil and muzzle rise reducing, muzzle brake, look no further than the NERO from Walker Defense Research.