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AR15.COM
11/11/2013 7:11:36 AM EDT
About once or twice every or every other mag the slide stop will some how jump up just enough to lock the slide back with rounds in the mag. Here's what I know; there seems to be plenty of spring tension on the stop to keep it down and it is definetly not me hitting with my thumb during recoil. So here's where I'm at, could it be the stop tab that hits the follower to lock the slide is catching on a bullet as it pops up into the mag ? I can see slight copper streaks on the tab.  Or is a weak recoil spring causing "bounce" and making it jump up ? Any ideas ? -Thanks