Originally Posted by
jumpthestack
I just got my RMR07 (adjustable) mounted on my M&P9, and after about 200 rounds, it started changing brightness up or down with recoil. Right now, if I lock the slide back and release it forward, it will turn itself off. Then if I do it again, it will turn itself on, every time. Very disappointing. I guess I should have listened about the adjustable ones, but to me the adjustable thing is very appealing for various reasons. I'm willing to go a few rounds sending it back until I get one that isn't messed up.