I bought one and put it on a Glock 34 a few weeks back with a R2 drop in but haven't taken it to the range for a troture test yet. Seems decent quality build and is a lot brighter then my Glock Laser Light that I moved to my Glock 19.
My attitude was that it is worth a try, I doubt if it will survive as well as an expensive weapon light on the battle field, but I'm happy with it for a house gun.
I'll add more after I go to the range next time, but as it's LED and the glocks don't have a very sharp recoil, I'd be supprised if I have an issue.
Wait a second...
Ok, pulled off the battery compartment and unscrewed the head and I don't see any wires at all,more metal not plastic body to the head, switch seems solid, but I'm can't see inside to tell how it's made. Only warning is the glass lens isn't held in place so be careful not to drop and break that. I'd say worth the money and the wait.
Mitch