Description PSA 16″ 300AAC Blackout The PSA 16″ 300AAC Blackout has a Chrome Moly vanadium 4150V barrel with a 1:8″ twist, M4 barrel extension, and a pistol-length gas system. It is finished off with a .750″ diameter gas block, PSA 15″ Lightweight M-Lok Partial Picatinny free float rail, and an A2 Flash Hider. The Upper is a forged 7075-T6 A3 AR machined to MIL-SPECS and hard coat anodized. These uppers are made for us right here in the USA by a mil-spec manufacturer. The bolt is made of Mil-spec shot-peened Carpenter 158 steel. Gas key is secured with grade 8 fasteners and staked per mil-spec. Bolt carrier is nitride treated. The charging handle is included to complete the upper. Barrel Length: 16″ Gas System: Pistol Length Barrel Profile: Heavy Barrel Steel: 4150V Chrome Moly Vanadium Barrel Finish: Nitride Chrome Lining: None Muzzle Thread: 5/8-24 Chamber: 300 AAC Blackout Twist Rate: 1 in 8″ Barrel Extension: M4 Diameter at Gas Block: .750″ Gas Block Type: Low-profile Muzzle Device: A2 Flash Hider Receiver Material: Forged 7075 T6 Receiver Type: M4 Handguard Type: PSA 15″ Lightweight M-Lok Rail Partial Picatinny Free Float Bolt Carrier Group Included: Yes Bolt Steel: Carpenter 158 Bolt Carrier Profile: Full-Auto Charging Handle Included: Yes Overall Length: 24.5″
