The 2-Minute Rule for Bushmaster AR-15 detent springs
These parts can and do final for much longer plus the agenda is geared extra to a responsibility rifle. I have found the 2500 and 5000rd PM's to be effective.apart from which i will buy "real" things - yhm for rails, although These are a tiny bit away from spec, still do the job well for me (the rails are somewhat quick when compared with the spec)