MeproLight M21 Review
Our Rating: 7.8
In a Nutshell
For infantry and patrol, a matter of a split-second can make all the difference, and for infantry in situations where supplies are hard to come by, the amount of maintenance required by an optic can be make or break. M21 offers a promising solution to infantry and patrol who need something that they can pull from the hip and have ready to go as soon as they are. Other users aren’t going to want it.
What's the Scope?
MeproLight’s M21 is a high-quality quasi-red-dot reflex sight designed for “quick and instinctive accurate shooting”, per the MeproLight website.
Size (LxWxH in mm)
Lens Cover Type
$450 or less
The reticle of this sight is super bright and obvious in sunlight and you won’t have any problems acquiring targets. The reticle itself can take many forms; we sprung for the unique triangle shape. All reticles are well- designed and allow you to efficiently focus. In indoor environments, it’s a little bit dimmer but still fairly clear. In night-time or no-light environments, the scope operates well using an integrated power system to provide illumination in these circumstances.
One problem that a lot of people have encountered is that the reticle, unfortunately, washes out when you’re in a dark room looking at a light source, like at or outside of a window. Again, this can be corrected by co-witnessing, but some people may not want to co-witness just to have an always-usable gun.
This sight is particularly well-suited to cold or arid environments for two reasons. Firstly, in extreme temperatures, batteries drain much faster than they may under more temperate conditions. Obviously, not having batteries on this sight means you never have to worry about batteries dying on you. However, there’s another less obvious reason: snow and ice reflects light, creating a super bright environment, and arid environments tend to be very snny by their very nature. In either case, you have a recipe for a super-bright reticle in daytime combat conditions. Given that the IDF is fighting in arid conditions, it’s clear why they might choose to give their infantry a sight like the M21.
Installation of the unit is simple, and you don’t need a spacer to take advantage of this sight either. After mounting, zeroing is a snap and the sight should hold zero for a long time to come. The quick-release mount is also super nice, making cleaning stress-free since you can just detach the mount for storage and clean your weapon properly.
Moreover, this is a military-grade sight. Because of this, it’s built to take a beating, and it’ll serve you well in this capacity. Pretty much, you can expect it to take whatever mess you two might go through together, and do so with a smile. Whether or not this durability makes up for some of the optical shortcomings is for you to personally decide.
Let’s talk value. The biggest drawback of this unit is the fact that it’s a little expensive for what it is. While it’s cheap compared to its competitors, it’s a little expensive when you take into account the limited set of features and the narrow situational scope where it would actually be of use to you, outside of close quarters battle in open-air or daylight indoor situations. This is worsened by the fact that MeproLight has far from the best customer service. In fact, getting in touch with them and resolving problems can be fairly frustrating.
At the end of the day, though, there’s not a lot to be said for this sight. The fact that it’s always on and doesn’t require any batteries means that it’s always ready for you, whenever you may need it. It’s highly accurate and the idiosyncratic reticle options make it easy to find and keep your sight on your target - though it won’t need to stay on them for long, thanks to the pinpoint precision. It’s built for daytime fighting in close quarters situations, and outside of that situation, you may find yourself needing to rely on other optics for illumination and clarity. But depending on your needs, it might be perfect for you.
Should You Buy It?
This is a niche sight intended for a niche audience. But bearing that in mind, if you’re in a situation where you’re primarily vulnerable in open-air situations, where quick reflexes are of the utmost importance, and especially if where supplies like batteries are hard to come by, then this is the sight for you, and Yes, you should buy it. This includes folks like infantry and people on patrol. It performs well in uniform lighting situations but falters when confronted in the dark with a light source. For people looking for general home defense, you probably don’t want the M21 for this reason.
- All-light aiming capability without batteries
- Designed through close collaboration with Israeli Special Forces
- Combat proven- Standard sight of the Israeli Military
- Includes mounting base with 2 quick release levers
For the general-purpose shooter, looking for something to shoot targets or to defend their home with, this is probably not the most ideal sight. But for the niche audience this sight is intended to accommodate, there are few better options, and if you’re in this sight’s target market, you really can’t go wrong.