I went with my father in law to the range yesterday he has a xdm 9mm with about 500rds through it.anyway after getting about 8 light strikes per mag for 2 mags, he put it away.he took it apart when we got home and I didn't notice anything blocking any of the striker parts, so we cleaned everything off and put it back together,we put a pencil in the barrel and it shot out about 2 feet,any ideas?it shouldn't be the spring already should it?