WHAT DOES AR-15 OPTICS MEAN?

These parts can and do final much longer as well as timetable is geared more toward a responsibility rifle. I have found the 2500 and 5000rd PM's to become helpful.besides that i will obtain "real" things - yhm for rails, though they are somewhat outside of spec, nevertheless operate well for me (the rails are a tad shorter in comparison to the spe