Recently I have taken my 522 to the desert and the first mag cycled fine, but the next mag (loaded with 9) had problems charging.... also i noticed when i charged it manually it felt weak, the only way to discharge the round, was to close the chamber by pushing the charging handle foward, what i believe is the problem, is that i might need a new recoil spring if you have any ideas or solutions please message me...... on an another note, do you guys have good places to buy the rails for the 522 thanks