This is, unfortunately, one of the few options for a mounted light on a G43 sized pistol. Streamlight must have pushed this out pretty quick and could've spent a bit more time on T & E to make sure it's going to hold up to everyday use. I purchased mine less than a year ago and it is a daily carry item. I practice often with this gun and the TLR-6 is just not up to par. I want it to be as good as it seems but it's not holding up well. The activation button on the left side of mine just fell off. It still functions, but it is VERY sensitive to anything touching it now. Another issue I have had is during shooting. The light will turn off/on or become dimmer after shooting a few rounds. The batteries are tight and maintain contact, but I have not been able to identify what causes the light to dim. (At 100 lumens, it's already pretty low intensity but when it dims, I can't spotlight past 5-6 feet) Hopefully, Streamlight can look into these issues and correct them with a "version 2" of this setup. The size and ease of installation make it a great looking choice, however, for a product I plan to use to defend myself, I'm going to need something much more reliable.