Carbon_15
Member
I recently bought a RRA 9mm upper for my AR. The rifle has functioned normally through sever hundred round before the upper swap. In 9mm configuration I basically have a single shot. The rifle will fire, ejects, and loads a fresh round, but the hammer follows the bolt forward.
I have the recommended DPMS rounded hammer, everything else in the lower is standard 223 gear.
Any ideas?
I have the recommended DPMS rounded hammer, everything else in the lower is standard 223 gear.
Any ideas?