WoW... So I get up this morning and I was doing some maintenance on my M&Ps and realized that my laser was way off. I haven't even shot it yet. So I rezero and bumped the gun a few times on my knee. Sure enough the laser mover. I called CT and they didn't have a clue other than a defect. So I took it back to Cabelas and had to explain to 3 people the problem. Only one of them understood and actually put 2 and 2 together and swapped it out. Took it home and for now it's staying put but it worries me that a $300 product designed to handle military and LEO use would have such a problem. Here's hoping this is an isolated incident. If this laser repeats the problem I am going to have to give it up and get my cash back. Something I really don't want to do since I love this product. Come on CT hold up to your reputation. Customer service from CT was great though, no complaints there. Hey, at least if I have to take it back I know there is a beautiful No 4 Lee Enfield sitting there for $299. A good even swap if nothing else.