PSA 16" MID-LENGTH 5.56 NATO 1:7 NITRIDE 13.5" LIGHTWEIGHT M-LOK UPPER - WITH BCG & CH
Barrel Length: 16"Gas System: Midlength Barrel Profile: A2Barrel Steel: 4150 Chrome-Moly VanadiumBarrel Finish: NitrideChrome Lining: NoneMuzzle Thread: 1/2-28Chamber: 5.56 NATOTwist Rate: 1:7Barrel Extension: M4Diameter at Gas Block: .750Gas Block Type: Low-profileMuzzle Device: A2 Flash HiderReceiver Material: Forged 7075 T6Receiver Type: M4Handguard Type: PSA 13.5" Lightweight M-Lok RailBolt Carrier Group Included: YesBolt Steel: Carpenter 158Bolt Carrier Profile: Full-autoCharging Handle Included: YesOverall Length: 24.5"Weight: 4.5 lbs