Chad Wallace

October 7, 2023

Primary Arms SLx 3x MicroPrism

Chad Wallace

October 7, 2023

Many years back, fixed power optics were very common. They tended to be larger in size when compared to say, a standard tube style red dot. Fixed power optics have come back around thanks to the small magnified prism optics like the Primary Arms SLx 3x MicroPrism. The SLx is so much lighter and smaller than the fixed power scopes of the old days. The SLx 3 power prism also gives you plenty of new benefits that just weren’t available back in the day. So let’s welcome in the small, fixed 3 power optic of the future. Now offered in FDE to match all your tactical needs.

Primary Arms set the bar high when they released the 1x MicroPrism, then they raised it with 3x and 5x models. They sent me out the 3x version in FDE. Fixed power optics have their place in the shooting world. With the SLx 3x you get a super small package size plus some magnification to see targets at mid range distances. Since the magnification isn't super overpowering, you can still use this optic up close. It also doesn’t weigh much, tipping the scales at just about 8 ounces. For being in Primary Arms’ SLx line of products, you get an exceptional value with super clear glass.

One of the great aspects of the Primary Arms 3x MicroPrism is its reticle. Primary Arms uses one of their ACSS reticles, or “Advanced Combined Sighting System”, in the SLx 3x. In particular, this is the Raptor ACSS reticle. The ACSS Raptor gives you ranging, bullet drop compensation, wind holds, and moving target leads, all in a simple to use red colored reticle. The reticle has an illuminated horseshoe around a center chevron (think triangle instead of dot). The ranging, wind and bullet drop then take up the reticle below the center chevron, these compensations are not illuminated. The illuminated section has 13 intensity settings, 3 of which can be used with night vision. Using the ACSS Raptor is really easy. The large horseshoe lets you shoot up close targets quickly, even though the SLx is a 3 power optic. The chevron and stadia then give you precision shots out farther. I found the reticle to be a good compromise between close and far range targets. Being a 3 power prism sight, I am a little slower at shooting an array of close in targets, but I am more accurate when out at farther distances. Primary Arms did a good job with the reticle on the SLx 3x MicroPrism. The illuminated part of the reticle is “daylight” bright, even in direct sunlight. If, for some reason, it does wash out a tiny bit, the reticle is etched into the glass, so you get your typical non illuminated black reticle anytime, even if the battery goes dead.

If you are worried that the SLx 3x MicroPrism won’t work for your firearm, don’t fret. Primary Arms gave the MicroPrism plenty of mounting options, and they all come with the optic. The SLx manual states 8 different mounting heights. This is from essentially rail height (1.1” to center of prism) to 2.075” to center of optic. There is also one other option. If you have a carry handle AR, fixed or removable, the SLx MicroPrism will mount directly to the carry handle. If you want to use a different mount than the ones supplied, The SLx MicroPrisms use an industry standard “Mini Prism” footprint.

One aspect of the Primary Arms MicroPrisms is their exceptional clarity. For the price you pay for one of these, you get extraordinary clear glass. I’ve also found that even though the eye relief is stated at 2.7”, it is very forgiving. Since the MicroPrisms have an etched reticle, they also don’t have the clarity problems for people with astigmatisms. Making the ACSS reticle super clear. Being that this SLx MicroPrism is 3 power, it also has a decent field of view at 100 yds, which is 38 ft. So you will see a 38 foot wide circle, when looking through the prism sight, at 100 yards.

The SLx 3x MicroPrism also has a few other features that need mentioning. First off, it uses Primary Arms’ “AutoLive” motion sensing on and off. So when you pick up the SLx prism, the reticle turns on at whatever brightness the knob is set to. After not sensing any movement for a few minutes, the optic goes back into a hibernate mode, where the reticle is off. Once you move the optic, the on cycle starts again. I absolutely love the AutoLive technology and it works fantastic on the Primary Arms’ MicroPrisms. This AutoLive also gives the 3x MicroPrism a battery life of around 29,000 hours. Which is fantastic for any magnified optic. The windage and elevation adjustments are also protected from being hit or accidentally turned. You can even adjust them using the rim of a cartridge. I’ve done it, it’s easier than looking through the range bag for a tool.

The Primary Arms SLx 3x MicroPrism fits in well for a fixed mid range optic. It allows close range work too. Everytime I look through one of the Primary Arms MicroPrisms, I am surprised by the optic clarity. Add in the AutoLive function and you have a great combo of features. So if you are looking for a small fixed 3 power optic, check out Primary Arms’ line of SLx MicroPrisms.

Firearms Insider Reviews - 8 Key Points

Claim to Fame:

Small, lightweight fixed 3 power prism scope

Target Market:

Those wanting a small profile, fixed 3x sight

FNBs (Features & Benefits of this product):

FDE finish
13 total illumination settings, 3 are NightVision compatible
Daylight Bright
AutoLive motion-sensing on/off battery saving technology
Length: 2.95”
Weight: 7.95 oz.
Illuminated and etched ACSS bullet drop reticle
Field of View: 38.0 ft @ 100 yds
80 MOA Adjustment
0.25 MOA Click Value
8 Mounting Height Options
One CR2032 Battery (Included)
Up to 29,000 Hours on medium setting
Industry Standard Mini Prism Mount Footprint
Eye Relief: 2.7"
Lens Covers
Lifetime Warranty

What other aesthetic options or finishes are available?

Black anodized, Griffin MIL reticle

What others are saying?:

5 out 5 stars - Devin at PrimaryArms.com

WOW, PRIMARY ARMS REALLY GOT IT RIGHT WITH THIS ONE!

This is Primary Arms Optic number 3 for me, but will definitely not be the last!

I got this optic for a lighter weight, simplified build. Got tired of dealing with heavy rifles and playing around with LPVO's, so this became the obvious choice. I was a bit skeptical about the fixed 3x magnification, but after zeroing it this afternoon I didn't have any issues taking shots at 100 and 150 yards, ran out of daylight to try any longer distances. However, I don't think I'll have any issues making hits out to 300–400 yards.

I know this is a "budget" priced optic, but I'm pretty impressed, the glass is really clear. The reticle is sharp and informative without being cluttered like so many optics are. Oh, and speaking of the reticle, the illumination is very bright on the maximum setting, much brighter than my LPVO and gen 1 Cyclops prism. I would say it's daylight bright, I actually ended up dropping it down to the 9th or the 10th setting to use during the day.

Link to other reviews:

Lynx Defense

Price point:

MSRP = $319.99

Retail = Same at Amazon

I need it now! Availability:

Primary Arms

Our Rating:

Pros:

Clear
Bright ACSS reticle
AutoLive
Small size
Various mounting heights

Cons:

Reticle is small to see

Score: 8.00 Great

Favorite Link: Primary Arms SLx 1x Prism review

Chad Wallace

October 22, 2022

Optics, Primary Arms, Review, Scope, ACSS

Primary Arms GLx 1-6x24 FFP ACSS Raptor

Chad Wallace

October 22, 2022

Optics, Primary Arms, Review, Scope, ACSS

When I opened the box with the Primary Arms GLx 1-6x24, I was super excited. The GLx 1-6x24 is one of Primary Arms’ mid-tier optics. So it falls, price and feature wise, in between their SLx and PLx lines. This particular GLX 1-6x24 has an ACSS-Raptor reticle and is a first focal plane (FFP) optic. This low power variable optic (LPVO) is packed with features.

Since the reticle is such an important part of your optic, let's start with the ACSS Raptor M6 reticle. The Raptor M6 Advanced Combined Sighting System, or ACSS, is a range estimating and bullet drop compensating reticle. Being that it is a FFP optic, the ranging and estimation properties stay the same throughout the magnification range. This is a big plus as one doesn’t have to recalculate anything at different magnification ranges. The Raptor M6 reticle is calibrated for these cartridges: 5.56 NATO, 5.45x39, .308 Win, 6.5 Grendel and 6.8 SPC. Give or take a few differences in actual ballistics. I mounted it on a 5.56 AR with a 16” barrel and the drop estimations seemed to work well, at least for the ranges I could test.

1x - targets at 50, 100, & 200 yds. Full reticle illumination

6x - 200 yd targets. Full reticle illumination

A description of the Raptor M6 reticle is probably in order. The Raptor is a horseshoe style reticle. So there's a larger circle around a chevron aiming point (think triangle). The circle is missing the bottom portion, hence the “horseshoe” name. Then the Raptor has a vertical line, with short horizontal lines on it, to compensate for bullet drops at various ranges. There’s also some dots for wind holds, if needed. On the right and left side of the chevron are MIL ranging lines. These are to quickly assess the range of a 5’ 10” target. The middle chevron aiming point is where precision comes into play. Use the top point of the chevron for accurate aiming. Or just put the chevron over something for quicker shots. The bottom triangle point will be your 200 yard holdover, and then the bottom of the chevron will be your 300 yard holdover. All of this is in Primary Arms’ manuals, I’m just trying to give you a quick summary. Now, if you turn the GLx 1-6 down to its true 1x, the reticle gets pretty small. Don’t fret, this is actually very useful. Now you can use it for super quick shots up close. Very similar to a circle dot reticle in a red dot. Even with both eyes open. Oh, did I mention the chevron is illuminated? It is, but it and the horseshoe are the only parts that are illuminated, the rest of the reticle stays black.

Primary Arms also stuck their “Autolive” on/off into the GLx 1-6. The autolive turns the reticle off after 3 minutes of no physical movement, then quickly turns it back on when a tiny bit of movement happens. I love the autolive function and in the case of the GLx, it gives around 600 hrs of battery life. They say it is a daylight bright reticle, but in direct sunlight, the red illumination is pretty non existent. Any time besides direct sun, the reticle’s illumination is easy to see and brightly lit up. It has 10 brightness levels, with and off between each one. I like that there's an “off” between each “on.”

Now that the long winded reticle explanation is done, we can focus on the glass in the GLx 1-6. Primary Arms uses low-dispersion glass that is multi coated. Why do you care? Because it makes everything look super clear and bright. Yes, the glass is really that clear. The magnification ranges are true to the numbers, so 1x is really no magnification, and 6x is really 6 times normal. I really appreciate the true 1x for running close targets at the range. The 6x makes it pretty easy to hit targets at various ranges also. The field of view is pretty decent, specs are below if you're interested. The eye relief is pretty forgiving at 1x, it’s around 3 to 3.5 inches, but you don’t need to be perfect with it. At 6x that’s a different story, you really need to be in the scopes sweet spot. The clarity of the glass really does rival some of the higher end 1-6’s

If you are not using the GLx’s Raptor reticle for bullet drop compensation, it has some pretty nice turrets to use instead. The GLx 1-6 comes from the factory with capped turrets. But hold on, there’s something more in the box. Also included is a single exposed turret. Yes, you can replace the elevation turret with a non-capped one. I suppose you could put it on the windage turret also, but why. Now you can dial in the adjustments as necessary without having to take the cap off. I get that if you are running around in the woods, or doing secret squirrel stuff, you might want the advantage of having capped turrets. But for me, I instantly installed the tactical, non-capped turret. Adjustments are the same either way and adjust in increments of 0.1 MIL’s. These adjustments also use a steel on steel mechanism. This means you’ll have consistent adjustments and repeatability for a lifetime. The GLx 1-6 does have some physically large turrets. This makes it much easier to adjust with gloves, or just in general. The clicks are fairly decent and audible. They feel a tad bit mushy to me, but that’s probably due to the sealing that keeps water and dust out. In all, the turrets adjust well. These turrets can also be loosened up and set to zero. Not a zero stop, but at least you’ll have a zero point to adjust from.

There are a few other notable aspects of the Primary Arms GLx 1-6. One is the throw lever. The throw lever makes it easier and quicker to adjust the magnification ring. The ring adjustment operates smoothly, but having the throw lever is really nice. It sticks up about ½” above the ring. So it isn’t really in the way, but is still large enough to matter. Primary Arms also made the lever removable and changeable. It is screwed onto a tiny dovetail. Just unscrew it and slide it off to change it to a larger one, a folding one, or just to leave it off. This next aspect is its weight. It weighs in at 21 ounces. This is a few more ounces than some others in this mid-tier. When I say a few more, it’s like 3 ounces difference, so not much. But on the plus size of the weight, the GLx 1-6 is built like a tank. It is solid. I wouldn’t hesitate to use this LPVO harshly.

If you are in the market for a top quality LPVO, but don’t want to pay top-tier pricing, the Primary Arms GLx 1-6x24 might be everything you need. The glass is super clear, it has a very useful FFP reticle, is pretty much indestructible, can range objects on the fly, and turns on and off automatically. What more could you want? I’d definitely look into one of these if you intend on running your stuff hard. You can check the GLX 1-6x24 ACSS Raptor M6 out at Primary Arms, as well as all the other products they have over there.