Hi everyone, I'm having a strange type of jamming problem on my Bushmaster 16" AR-15 (actaully XM15-E2S).
Once every 30 rounds or so, at any point in any magazine, the bolt seems to only strip the round half way off the mag and doesn't go all the way "home." The weird part is that if I shake the rifle just a little bit, sometimes the bolt picks up again and finishes going forward. IT's like it's just barely catching on something, and I can't figure out what it is.
It may be important to note that this problem started occuring recently after installing both a JP single stage trigger and Ti firing pin. Could these parts be the culprits? Thanks for any help.
P.S. When the bolt does continue forward after shaking or tapping the gun, the hammer is still cocked back and ready to fire, so I don't think that the hammer is following, although, like I said, I'm not sure what the problem is.