Hello,
I have had this 10 BA Stealth for a number of years now and since the beginning it has had this issue where if there is more than 5 rounds in the mag it will drop when fired. I'm an experienced shooter and I am certain the mag is seated. The stock mag would have trouble with the bolt picking up the next round as well. I am now using P Mags which fixed the feeding issue but they too will fall out if there is more than 5 rounds loaded. The spring on the mag latch feels weak to me. It isn't broken but I just think it should be stronger. The mag has more "play" than I've ever dealt with on any other weapon I've had. I'm considering grinding a little slot below the nub on the mag to see if the latch will seat a little deeper and not allow it to fall out. Has anyone else had this issue or have any ideas?