AAC 16" .300 BLACKOUT Upper Receiver
FREE SHIPPING on this item in the 48 States!
Advanced Armament Corporation (AAC) .300 BLACKOUT caliber Upper Receiver. Features a 16" Nitrided 1:7 twist barrel, AAC 51T Blackout Flash Hider and Knights Armament URX 3.1. Ready to drop onto any AR/M16 lower receiver group!