I really love this light, is super bright and easy to operate the controls. While st the range it fell off the rail, hit the floor, and the controls would not work properly. So I emailed the company asking how far their "limited lifetime warranty" went, explained the situation, and even though the damage was not technically a "manufacturer defect" that would be covered under warranty, they sent me a brand new one anyway, saying they know there may be ways to attach it to a gun so that it might fall off! I just got the replacement today, am super happy with it AND their customer service!