I recently bought a new 30 rd mag from Acadamy for my Mini. I went to the range this weekend and had a tough time getting it to feed well. It would jam quite frequently. After some brute strength I was able to get the magazine in tight enough to where it would feed, but I dont feel like it should be that much of a pain in the rear. Maybe just a crap mag. Also after about 40 rds, not rapid fire, smoke started coming from the heat shield. This could be due to the fact that the rifle is old, and has not been shot much at all. Maybe it was just some dust that I couldnt get to between the barell and heat shield. Anyone else have this problem.