Yes, I have had my laser on my glock for about 1 year now. I zero'd it in one time and it has not moved since! I toss my gun into my briefcase, center console and every where else you could imagine. This is one tough laser, very bright red that shows up very well in the sun even. I really like the fact that I can shoot from the hip and out shoot my sons with their sights! Great laser, worth the money any day!