Chad Wallace

August 1, 2021

Review

Primary Arms GLX 2x prism w/ACSS Gemini 9mm reticle

Chad Wallace

August 1, 2021

Review

When Primary Arms offered to send their new GLx 2x prism sight out for review, I jumped at the chance. I had been looking for something to put on my 16” pistol caliber carbine, and this sounded perfect, especially since it was specifically designed for a 9mm PCC. This prism scope uses Primary Arms’ popular ACSS reticle with daylight bright illumination. The GLx prism is something different, that works quite well.

The GLx 2x prism has numerous features. All of which make it a great optic. The first is the ACSS Gemini reticle. This reticle was designed for the 9mm Luger cartridge in a pistol caliber carbine. The simple explanation of the ACSS reticle is that it’s an upside down horseshoe shaped circle with a center triangle aiming point. It also has ballistic drop compensation (BDC) built into the reticle. Below the reticle is a target ranging ladder. The horseshoe also acts as an 8.6 mph lead when shooting moving targets. I do wish the reticle had some sort of hash marks, on the horseshoe, to keep it lined up with the aiming point, when leading a target. The bullet drops and ranging are best described by Primary Arms’ diagrams. Sighting adjustments are done with capped turrets. Once unscrewed, the caps can be turned over to adjust the windage and elevation in 0.25” MOA increments.

Primary Arms uses multi coated low dispersion glass in the GLx. This glass gives the optic great clarity. I found that the view through the GLx is super bright and clear. The etched reticle is also very clear and defined. This is probably due to an adjustable diopter for getting the reticle perfectly clear and adjusted to your eyes. Because the GLx is a prism sight, there is eye relief. Primary Arms states the optimal eye relief is 3.7” from the optic. I found that the GLx is very forgiving in the eye relief department. I get a good sight picture with my eye only an inch away and all the way out at around 6 inches of eye relief. The reticle is still very clear and usable at both extremes.

The GLx’s illuminated reticle has 11 brightness settings. The first 3 can be used with night vision devices. The highest 2 are what is called “daylight bright”, and are bright enough to be used in bright sunlight. Yes, the reticle shines a bright red, even in direct sunlight. However only the horseshoe and aiming triangle are illuminated. The BDC and ranging portions are not. Because of the nature of prism sights, if you have an astigmatism, the illumination will not “starburst” out like a normal red dot will. My only complaint about the illumination is the adjustment dial, the detent clicks are mushy feeling and not crisp at all.

Battery life can be a concern for some people. Primary Arms gave the GLx what they call “AUTOLIVE” motion sensing technology. This greatly improves battery life from the single CR2032 battery. How you might ask? Well, it automatically shuts off the illumination after 3 minutes of inactivity and turns it back on when motion is detected. They say this gives a battery life of approximately 20,000 hours on the medium settings. The Autolive works extremely well. Everytime I pick up the rifle, the reticle is on. I tested the off function also, and it does turn the reticle off after around 3 minutes of sitting idle on a bench. I have left the reticle turned on for most of its life here, without any problems. Plus, if the battery does go dead, the GLx still has an etched reticle for you to use.

Some people might wonder why the GLx prism comes in a fixed 2 power. The fixed 2x gives a little better target identification. But it also still gives the shooter an option to shoot with both eyes open. It barely took me any time to get used to it. I found the GLx to be just as quick, transitioning from target to target, as my previously mounted red dot. Having twice the magnification, plus the ACSS reticle, made the longer shots easier also. I was consistently hitting a 12” steel plate at 200 yards using the BDC portion of the reticle. For close targets, I just put the triangle on the target and pressed the trigger. If you want more precision, on close targets, one can use the top point of the triangle.

The GLx sight comes with all the mounting hardware needed. For one, it comes with three spacers to get the correct optic height for your carbine. It also uses standard mini ACOG bases, so if you don’t like the supplied mounting options, you can choose someone else's mount. Primary Arms also supplies various screws for the mounting of the spacers and for other styles of mounts. A little tube of Vibra-Tite (thread locker), wrenches, and a cleaning cloth are also included.

I wouldn’t consider the GLx 2x prism to be on the large size for this type of optic. It leans toward the smaller side, but still larger than most of the red dots of today. The GLx is not a red dot, but I am using them as a comparison for size. Total length comes in at 5.3 inches. The total width is 2.3” inches because of the battery and brightness adjustment. Otherwise the tube is about 1.5 inches in diameter. Total height without any spacers is roughly 2 inches. It does weigh 11 ounces, so about twice what their 1x micro prism weighs, but the same as some other 1x prism sights. I thought the size and weight were about right for all the features the GLx has to offer.

The Primary Arms GLx 2x prism works very well for its intended purpose on a 9mm PCC. I really like the AUTOLIVE feature. The 2x is a good all around magnification for a 9mm rifle. The ACSS reticle is clear, easy to use, and packed with features. I would definitely check out Primary Arms’ optic line. They did a very good job on the GLx with the Gemini reticle.

Firearms Insider Reviews - 8 Key Points

Claim to Fame:

2x prism optic with horseshoe style ACSS Gemini reticle

Target Market:

PCC shooters that want something more than a red dot

FNBs (Features & Benefits of this product):

ACSS etched reticle
2x fixed power
11 brightness settings
Night Vision setting
Daylight bright red illumination
AutoLive motion activation
20,000 hr battery life
Uses 1 CR 2032 battery
5.3” long
Weight - 11.0 ounces
3.7” optimal eye relief
0.25 MOA adjustments
FOV - 42ft @ 100yds
Low, Med., & High spacers included
Mini ACOG mounting interface
IP67 waterproof - 1 meter for 30 minutes

What other aesthetic options or finishes are available?

5.56/.308/5.45 BDC, 7.62x39/300 BO BDC,

What others are saying?:

5/5 stars @ primaryarms.com

SHOCKINGLY AMAZING OPTIC

For a CZ Scorpion, this optic is perfect. As a member of the old eyes club, if its not a Prism sight, I can't see as clear as I need to, so red dots are off the table. I have tried many red dots, and they have a snowflake image when I look through them and they are 1X, so a 2X is much better for my needs. This optic is extremely clear. This is not quite a Trijicon, but at 1/3rd the price and with the ACSS Gemini 9mm Reticle, this is a fantastic optic, especially for PCC's. When they come out with a 3X GLX, I will buy it too.

Link to other reviews:

Nothing found on the 9mm version

Price point:

MSRP = $369.99

I need it now! Availability:

Primary Arms

Our Rating:

Pros:

AutoLive activation
Battery life
Clear optics
Etched reticle
ACSS reticle

Cons:

Brightness knob detents are mushy
Has Eye Relief, unlike a red dot
Weight

Score: 8.00 Great

Primary Arms is a sponsor of the Gun and Gear review podcast. This has no bearing on the review. It was rated on its merits and not the sponsorship.

Chad Wallace

February 13, 2021

Review

Hawke Optics Endurance red dot

Chad Wallace

February 13, 2021

Review

If you didn’t know, I am a big fan of red dots on carbines. So every chance I get, I like to try out new ones. This leads us to the new Endurance line of red dots from Hawke Optics. Particularly the 1x25 version.

Hawke Optics recently introduced the Endurance line of red dots. They are aimed more at the AR/MSR/Sporting Carbine market. I say this because they have many options one would want for these applications, at least in my opinion. I’ll be talking about the 1x25, which is the smaller version of the Endurance, as they also offer a 1x30. Both versions have a 3 MOA dot size.

The Endurance red dot has a nice compact size. You can read the dimensions below in the FNB’s. However, it is very light at 6.5 ounces, so it adds very little to the weight of the rifle. Because it is small, it is very unobtrusive. This makes it very nice for moving around obstacles, may they be walls, trees, or anything else you might bump up against.

This little red dot has 8 brightness settings. Utilized by using the “+” or “-” buttons on the top of the optic. The brightest setting is plenty bright outside in the sun, or when using the red dot with an artificial light source (flashlight). You can also hold down either of the buttons to turn it off. Or hit either one to turn it back on. However, I don’t use the on/off function. This is because the Endurance has an auto off, auto on function that works fantastic. After sitting still for 5 minutes, the optic turns the dot off. Yes, I sat there for 5 minutes and watched it turn off. Then when you move the optic, it turns back on. It even turned back on after sitting in my safe for 2 weeks with no use! The auto on/off function is my favorite feature of the Endurance red dot.

Some might say that having a 25mm objective lens is too small. I actually appreciate the smaller window on this optic. I am still able to pick the dot up extremely fast without “searching” for it. The 3 MOA dot might help with the fast acquisition. I would like to see a smaller dot size for more accurate work, but the Endurance doesn’t fall into the “Duty” category for me. It is, however, great for range and hunting use.

Adjustment of the red dot is pretty straight forward. It has covered windage and elevation knobs. Unscrew them, and underneath is a nice little click adjustment dial. No having to use a coin or a screwdriver here. They are 1 MOA adjustments per click. The clicks are pretty good. You can hear them and feel them. Just like you would want. I liked the fact that they were finger adjustable.

Another reason I put the Endurance red dot in the range/hunting use, is the battery life. Even though it turns itself off after use, it only has a 22 hour run time when on the max brightness setting. Of course, this increases to 190 hours on the medium setting. Which is a good actual use setting for this red dot. The low setting gives 2200 hours, but unless it’s pretty dark, there is not much use for this setting. Standby time, when using the auto on feature, is 10,000+ hours, so no need to worry about that.

The Endurance comes with 2 mounts. A low mount, and a quick release high mount. The high mount is for AR style carbines, and puts the red dot at the proper height for these rifles. As mentioned, it is a quick release high mount. When I first received the red dot, the quick release would not clamp on to the mounting rail, ugh. I had to take it apart and cut the screw shorter, then it clamped on just fine. The mount did loosen up after essentially throwing the rifle on the ground, but that could happen with other mounts also.

I drop tested the Endurance red dot. Watch the quick video. It survived nicely. No loss of zero and only a few minor dings from the rocks. The quick mount did loosen up after the second drop. This didn’t surprise me, I just turned the adjustment screw, on the quick mount, in a ½ turn and I was off to the races again.

The actual dot is very clear for me. I do have an astigmatism, so most dots appear “starry”. The Endurance’s dot is actually clearer than some of my other red dots. I don’t know if it is because of the coatings that Hawke uses, or if it’s just me. Looking through the Endurance is also very clear. The glass doesn’t seem to distort the color spectrum like some red dots do. I didn’t even notice any weird reflections or halo’s.

The Hawke Endurance red dot works well. I really like how durable it is. It’s super clear. My only wishes would be a smaller dot and more battery life. Everything else, on this little red dot, is top notch. It would be perfect for a .22lr or Pistol caliber carbine. If you're in the market for a reasonably priced, almost indestructible, red dot, go give the Hawke Optics Endurance line a look.