Palmetto State Armory (PSA) JAKL Upper – .300 AAC Blackout, 14.5" Nitride, Rifle-Length (1:8 Twist)
This PSA JAKL barreled upper receiver assembly is chambered in .300 AAC Blackout with a 14.5" nitride-treated 4150V chrome moly steel barrel. The JAKL uses a long-stroke gas piston operating system with a monolithic upper receiver and rifle-length handguard.
Key build features include a tool-less 8-position adjustable gas block, a shot-peened 7-lug Carpenter 158 bolt with a 4340 carrier, and a knurled, ambidextrous side-charging handle. This upper is designed to be used with the PSA JAKL proprietary buffer system.