Quick view Compare Aero Precision Aero Precision EPC-9 Threaded 5.5" 9mm Complete Upper Receiver w/ ATLAS R-ONE 4.8" Handguard $374.99
Quick view Compare All parts needed to assemble a 9mm Quarter Circle 10 7.5 inch barreled upper with a Quarter Circle 10 9mm bolt. $536.00
Quick view Compare All parts needed to assemble a Quarter Circle 10 .40 S&W 7.5 inch barreled upper with Quarter Circle 10 .40 caliber bolt. $560.00