It's been a while since I posted anything, about 2 months ago I pulled the trigger so to speak on my first Glock, a G19, and before I even shot it once, I bought an aftermarket slide with a RMR cutout, so I can install small micro dot. Specifically I'd been intrigues by the NCStar VISM Flip-Up Micro-Dot. The idea of a folding dot is actually brilliant... If you can pull it off. I've read a b unch of good reviews, and I've read bad ones as well, but I figured what the heck, I'll give it a shot. Yesterday at the range, I finally got chance to test it. On the 3rd shot, the screen folded in the locked position, something that a lot of people complain about, and no matter what I tried it wouldn't stay open for any follow up shot. Worse yet, after the 8-9 shot, it simply stopped working altogether. So I put it away and used the iron sights. I did horrible with it, but that another story. Today, I disassembled the sight to see what's wrong with it, and found the problem, and a solution. The reason it stopped working altogether is because the battery has a side metal clip that keeps it in place, and due to the recoil shock, it simply bent back and was no longer touching the battery. The fix is simple enough: The locking in folded position was due to the momentum of the slide when it slaps the backstop. The lens would fold down and catch on the lock-down spring. The solution was to straighten the spring offset angle, so when the lens fold down, the locking catch, fold behind it rather than in front. The only "drawback" is that if you want to actually locking down, you first have to push the spring in manually. Other than this it should work just fine. Now I just need to go back to the range and give this a run for it's money.