This laser isn't meant for mounting on a firearm to be used as a sight. It is used as a hand held/firearm mounted dazzler mostly for use at car checkpoints so soldiers have an alternative to shooting a car that isn't stopping.
From BE meyers
"The Glare Mout and Glare LA-9/P, developed by B.E. Meyers, provide a non-lethal deterrent weapon which temporarily interferes with a subject's vision while causing no eye damage. Unlike simple laser pointers that are engineered to emit a tight beam, these lasers are designed to emit a slightly diverging green beam that is less of an eye hazard but retain the desired effect on the viewer. The diverging output also results in a larger spot at the intended target, making aiming the device at long distances, or at multiple subjects, much easier. The Glare Mout's effective range is 150m-2 km. The LA-9/P effective range is 300m-4 km, and it has a further safety feature that neutralizes the possibility of eye injury even at close ranges."
Seeing as I am interested in a purchase would you mind if I asked how and where you got this glare mout from? Shoot me a PM or answer here.