It's been a while since I've posted in this thread and I've changed things up on my SPR's in the last year or so
Vltor MUR1a, Midwest Industries 13.5" NF rail, WOA 16" SPR barrel (1:7), PRI QC brake, Toolcraft BCG, BCM Mk2 buffer system, Magpul DT-PR w/ .25" CTR riser, Aero lower, G SSA-E, the...