It closes fine, if installed properly - Strike Industries Billet Ultimate Dust Cover

I almost did not buy this because of the reviews saying that it would not stay closed. But I took a chance anyway, because I wanted the silver color to match my build. Initially, I had installed this on a cheap PSA upper, and it would stay closed, but popped open rather easily. When I took a look, it wasn’t the dust cover that was the problem, it was the cheap upper. Luckily I had a nice aero precision upper that I had not used yet, so I swapped my uppers and installed this dust cover on the aero precision upper and it snaps closed nice and tight. In summary, if you’re planning on using this on a cheap upper, probably won’t do the trick, try it on something of good quality!