I picked up a Mossberg 930 about 6 months ago and encountered some problems with it. It cycled about everything I put through it as far as the action goes. The problem was in the magazine. More specifically the magazine extension and follower. I believe the issue was that after the 5th round of 2 ¾ was put into the mag, the follower would hang up right at the transition point from the mag to the extension not allowing the last 2 rounds to be loaded. This hang up would occur when loading or unloading the gun. Long story short, Mossberg was very responsive in sending me replacement mag tube, follower and mag spring. None of that helped the issue. Decided to try my own fix based on what I felt was the root cause. Using a Dremel tool, I relieved some of the sharp step in the extension right where it meets the threaded cap as this seemed to be the are of the hang up. Also I beveled the leading and trailing edge of the follower. Seems to have fixed the problem completely. Wondering if anyone else has experienced the same issue? The 930 continues to run perfectly with 100% reliability ever since the home fix.