EOTech EXPS3-0 Review

I’ve been wanting a new optic for one of my AR-15 builds for quite some time now, but really didn’t want to pull the trigger, so to speak, on a $500+ optic. I generally fall into the category of the person that really doesn’t want their optic to cost a large percentage of the cost of the gun. I’ve managed to get by for 10+ years with “budget” optics in one form or another, with good success. I’ve purchased many $200 optics and have never really had any issues. But I use them with a lot of care, and I know, that if I really slammed them around, they wouldn’t last.
With all of that being said, a friend recently told me, “Think of your optics as a life long purchase, not something for one specific rifle. A good optic can be moved from weapon to weapon, and fill multiple roles.” That little bit of wisdom really hit home for me. I had been looking at optics as a specific item for a specific rifle, not as a sighting system that would work on any of my platforms. All of that is really just me trying to talk myself into spending a lot of money on an optic, but it helps numb the pain a bit.
One of the first primary optics that I decided to get was an EOTech EXPS3-0. This is one of the “newer” offerings by EOTech, and one that I have used before on a friends rifle. So, I know what to expect with them, in one form or another. And from my past experience, I generally like them, and they are durable, real durable. I’ve seen them thrown, dropped, stepped on, and slammed around in bed of a truck. They just keep working!
If you’ve never had the opportunity to use or hold an EOTech, especially the EXPS3 models, take the time to go to a dealer and get one in your hands. You will immediately feel how well built they are. But, also because of how well built they are, they have a little heft to them; but you definitely know what you have when you have it in your hand. Everything from the locking mechanism on the picatinny mount to the seal on the battery compartment is well designed and just feels very well made.

Holo Reticles

The EXPS3-0 (or Extreme-XPS) has the standard EOTech Circle and Dot reticle (65/1 MOA). There are other models, such as the EXPS3-2 and EXPS3-4 with a circle and two vertical dot layout and a multiple dot reticle with dots for ranging at 0-300m, 400m, 500m and 600m. I chose the EXPS3-0, since it’s the model I’ve used in the past and was most familiar with the reticle. Also I feel that it is the simplest form of the reticle, and is easily adapted for various uses. You can use the 65 MOA ring for various holds; while it may not be as accurate for holds as one of the multi-dot systems, it also adapts well for CQB situations. For CQB, and most training that I attend, a simple reticle suits me best (I’ve always run simple red dots in the past).

Also to note, as I have previous mentioned in my review of the Vortex SPARC, many Red Dot/Holographic reticles look pixelated and blurry to me. This is due to an astigmatism. If you have an astigmatism, you may want to try one of these optics before you buy it, as it may be an issue for you. With the EOTech, the larger ring around the dot can be distracting, depending on how bad of an astigmatism you have. For me, in low light it’s a little bit of an issue, but it’s not too bad. However, during the day it’s not bad at all. But you should definitely check it out before you spend the money; it may be a deal breaker for you.

The EXPS3 uses a standard 123 battery and has a life of about 600 hours at maximum brightness. So under normal circumstances the battery should last much, much, much longer. The battery compartment is also sealed, and tethered. With the improved o-ring sealing, and the sealing of the electronic components the EXPS3 is waterproof to 33 ft. Perfect for anyone that may want to go swimming with their rifle… or if you use your rifle in adverse conditions.
Some other great features about the EOTech design is that all of the controls are easily accessible. One of the big gripes I have with most “budget” optics is that you usually need a wrench of some sort to adjust them, or get to the adjustments. On the EOTech everything is easily accessible; the brightness, night vision mode, and the windage and elevation adjustments are all easily accessed, even with gloves on. Making it a breeze to make adjustments while on the range or as the conditions you are shooting in change. One of the worst feelings is to need to make an adjustment to your optic, but not be able to because you don’t have the right tools.
Overall, these are really great optics, and if you don’t have an astigmatism, they are even better! You should definitely check them out if you are in the market for a new CQB style optic, or are looking for a good upgrade. And remember, it’s an investment; An EOTech will last you a really long time, possibly a life time, and be able to travel with you from weapon system to weapon system.
Here is the full list of specifications for the EXPS3 series:


Optics: Transmission holography – parallax free
Magnification: 1x
Eye Relief: Unlimited
Length/Width/Height: 3.5″ x 2.4″ x 2.8″ (91.4X 60.9x71mm)
Weight: 11.2 oz (317grams)
Temperature: -40 to 150 F
Waterproof: Submersible to 33 ft depth
Sealing: Fogproof internal optics
Adjustment (per click): 0.5 MOA (1/2″ at 100 yds)
Adjustment Range: +/- 40 MOA travel
Mount: 1″ Weaver or Picatinny (MIL-STD-1913) rail
Return to Zero: Repeatable to 2 MOA after re-mounting
Night Vision Comatibility: 10 brightness setting (generation I-III+)

Heads-Up-Display Window

Optical Surfaces: Anti-glare coating
Window Dimensions: 1.20″ x 0.85″ (30 x 23mm)
Front Window Material: 1/8″ solid glass
Rear Window Material: Shatter resistant laminate (3/16″ thick)
Field of View (100 yds): 30 yds (28m) at a 4″ eye relief


Brightness Adjustment Range: 146,000:1 brightest to lowest
Night Vision Brightness Range: 1280:1 with NV switch engaged
Power Source: (1) 123 lithium battery
Battery Life: 600 continuous hours at nominal setting 12
Brightness Settings: 30 settings with scrolling feature (10 settings for NV use)
Auto Battery Check Indicator: Flashing reticle upon start-up
Auto Shut-down: At 8 hrs- programmable to 4 hrs



Vortex Razor HD – 1-4×24

I recently got the opportunity to get my hands on a Vortex Razor HD 1-4×24 scope. This is pretty much one of the top of the line optics from Vortex, and I have to say I really like it. It’s a little on the heavy side at just over 20 ounces. Other than the weight, it is a great optic. The fit and finish is awesome, it feels very well put together, and everything just feels like quality. There are no loose turrets or anything like that.

The “precision-etched” reticle is on the first focal plane (FFP), this allows for reticle to remain in proportion for the entire magnification range. This is a little strange at 1x (you cant see much of the reticle detail, but not that you need much more than an “X” at that magnification). But at the full magnification, the reticle and all of its detail is crystal clear. I’m a fan of FFP reticles, especially for longer range applications.

Here are all of the specs on the Optic from the Vortex website.

Magnification 1-4 x
Objective Lens Diameter 24 mm
Eye Relief 3.9 inches
Field of View 94.5-24.2 feet/100 yards
Tube Size 30 mm
Turret Style Tall Uncapped
Adjustment Graduation 1/4 MOA
Travel per Rotation 24 MOA
Max Elevation Adjustment 200 MOA
Max Windage Adjustment 200 MOA
Parallax Setting 100 yards
Length 10.3 inches
Weight 20.2 ounces

I would definitely recommend checking out one of these optics, the price point is on the high side, but if you need a great 3-gun optic, I would definitely suggest taking a look at them. You can pick one up on Amazon or at your favorite optics dealer.


Burris AR-P.E.P.R. Mount (30mm)


Weight: 8.7oz
Overall Length: 5.3125 in.
Ring Length: 4.125 in.
Ring Spacing: 2.1875 in.
Ring Width: 1.75 in.
Ring Length: 1 in.
Height: 1 in. (rail to bottom of ring)


The Burris AR-P.E.P.R mount is sturdy and well constructed. The scope rings fit together quite well and are held down by 6 screws (3 on each side of the rings). Each ring also has a small (2 notch) Picantinny rail on the top. This will allow for the attaching of additional accessories above your scope.

The 1 in height of the mount will help many standard tactical style, low magnification scopes to clear a fold down rear site. And the forward offset of the scope allows for good eye relief on most short stalk weapons.

The only gripe that I might possibly have with this mount is the “Made in China” sticker it comes with.

Leatherwood CMR 1-4x24mm


Power: 1x to 4x (variable)
Objective Lense Dia: 24mm
Eye Relief: Minimum 3 in.
Overall Length: 10.2 in.
Weight: 16.5 oz.
Windage/Elevation Adjustments: 0.5 MOA
Battery Type: CR2032 (3V)


In the box, the Leatherwood CMR scope comes with the basics… A short user’s manual, an Allan wrench for adjusting the “ZRO-LOK” turret system, a cleaning cloth, 2x CR2032 Batteries, and a set of flip-up covers.


The overall feel of the scope is good; it has a nice weight to it and feels durable. All of the adjusters have firm indexing, so you can tell when you are tuning them; and they require a bit of force to actual make the adjustments.

The ZRO-LOC system allows you to lock the “zero” of the scope, and then make positive adjustments from that point of zero. It’s an interesting concept, but it will require some more messing with before I can say if it’s a good thing or a bad thing.

Adjusting the power of the scope through the 1x – 4x range is smooth and easy using the power ring. There is a nub that sticks out, so it is easily adjusted without actually having to look at the adjustment, i.e. while looking down the scope.

The clarity of the scope seems to be the same throughout the power ranges, however I did need to make some tweaks to the focus going from very close (1x @ 5 yds) to far away (4x @ ~100 yds). I was able to find a happy medium where near and far were clear, but it took a bit of tweaking.

On quick shouldering of my rifle, I did notice that I needed to be looking straight through the scope to avoid losing sight picture. It doesn’t function well from strange shooting angles (something that an EOTech works great for). In theory, this could be an issue for shooting off hand or from extreme or contorted positions.

The illumination of the reticle is controlled by a dial on the eye piece. There are 11 brightness settings. NV (night vision), 2 – 11, and an Off position. You can rotate the dial both directions, allowing you to go directly to either end of the brightness spectrum.


The reticle is interesting; I’m not completely sold on it. A lot of the elements are quite small and if you are in a quick aim situation, it could be hard to locate the parts you need. However with that said, operating in more of the scope perspective, the reticle is nice and contains some great drop and lead information.

The illumination of the reticle is pretty bright, especially for lower light situations. It washes out in bright light (outside, etc.) but the black reticle is still quite visible and clear. The illumination is definitely much better suited for indoors or dark/jungle type areas. Also, with the green illumination, the reticle does not wash out and is visible on all surfaces that I tested in lower light. In direct sun, the black reticle is visible and seems to function as any other scope would in the same situation. The below pictures show the reticle; The 1st is the illuminated reticle inside, the 2nd and 3rd is the illuminated reticle outside.

The reticle is only accurate at the highest magnification setting (4x) so to do any range estimation you must be in that setting. However because the turrets are tuned in MOA, adjustments at any magnification should be accurate. Also using the bullet drop indicators should work at any magnification as well.

The bullet drop indicator is set for either .223 (5.56mm NATO) 62 grain or .308 (7.62mm NATO) 168 grain ammunition. Included in the instructions is a basic ballistics chart containing ranging and drop information.

Here are some samples of the magnification of the scope, the 1st pictures is at 1x, the 2nd is at 4x.