Sitting here reading all the complaints about this rattling loose at the range is cracking me up. Why you feel you need to leave a tactical light on your shotgun at the range is beyond me. Of course the recoil from 12ga double ought buck is going to rattle it loose after a dozen or more rounds. God handmade your shoulder and even that'll rattle loose after that many rounds. Let me help y'all out. For the intended use, a tactical light mount, this is great. I have confidence that in a home defense scenario it will have no issue keeping things illuminated through a couple rounds of PDX slugs. Holds my light to my home defense shotgun without issue. If you are buying it to look like you are Special Forces at the range, find something else.