My first Glock 43X was the Austrian MOS model … my first foray into MOS red dot sights. I’ve decided I really like this pistol and the MOS sighting tech (I opted for the Swampfox Sentinel), but if I want to use it as a carry weapon, I can’t get over the feeling that optic loop bolted to the top of the slide is going to be an unacceptable draw/snag hazard. It definitely eliminates pocket carry as an option. I also don’t like lights or laser devices hanging below the muzzle, regardless of how they’re mounted. All my past laser sighting aids (Crimson Trace) have been the variety that wrap around the pistol grip, and shoot their beam from an aperture on the side of the pistol. Those I like. Crimson Trace doesn’t make ANY laser that’s compatible with the 43X-MOS (and they told me they have no plans to), so I bought a second, non-MOS version of the 43X, and this guide rod laser … also a first for me. Before I got the second 43X, I tried this laser on the MOS one, and wasn’t happy at all with the variance between the laser POI and the POI shown by a bore sight laser. After contacting LaserMax for a possible return/refund, they recommended cycling the slide 3 or 4 times, then checking the POI again. I did that, which significantly reduced the variance, and I was able to improve it a bit more by bumping both sides of the muzzle on the heel of my free hand … the guide rod in a semiauto pistol is designed to move/shift a little, and these little tricks help the LaserMax rod settle into a more stable position on the switch end, where it meets the barrel lug. I have found the fitment/variance issue a little less troublesome on the non-MOS 43X … VERY little variance between the bore sight and guide rod laser POI’s at 10 yards. Bottom line: with no way to adjust this device for elevation or windage, and its "best" alignment being the distance between the center of the bore and the center of the guide rod, the accuracy is not as mathematically precise as some shooters might want, but IMO, it’s certainly "good enough" for a subcompact handgun with a 3.4 inch barrel … WAY better than trying to quickly acquire your target using iron sights only. The switch is a little sticky/hard to press, and I noticed it gets even stickier/harder with a full mag in the pistol, but I can consistently/reliably activate the laser with my index/trigger finger only, so that’s also "good enough" for me. The laser itself is wizard … very bright green (also a first for me … lasers on all my other pistols are red), clearly visible in nearly all light conditions, and now I’ve got a 43X with "built-in" green laser sight support and no added bulk/stuff anywhere on the sleek frame of this subcompact Glock design. So, unless I experience any problems with slide cycling due to replacement of Glock’s two-stage recoil spring with the single-stage spring used on the LaserMax device, this gizmo is a keeper.
