I am a shooter in the UK with an M2 Field 1+2. I estimate around 1000 rounds have gone through it. However, after the last 300 rounds or so malfunctions have begun such as second round not chambering and stuck on the lifter. I put this down to me using light loads such as 24/26 grams.
During my last shoot the problem increased and then the magazine tube follower is jammed in the tube. I can push it (requiring great force) back in to the tube but it gets snagged again when it falls back toward the chamber end of the tube. It no longer comes flush with the end of the tube in to