PSA 16" M4 5.56 NATO 1/7 PHOSPHATE MOE UPPER WITH BCG, CH, & REAR MBUS - BLACK

Barrel Length: 16" Gas System: Carbine-Length Barrel Profile: M4 Barrel Steel: 4150V Chrome Moly Barrel Finish: Phosphate Chrome Lining: none Muzzle Thread: 1/2-28 Chamber: 5.56 NATO Twist Rate: 1 in 7" Barrel Extension: M4 Diameter at Gas Block: .750" Gas Block Type: F-marked Front Sight Base Muzzle Device: A2 Flash Hider Receiver Material: Forged 7075 T6 Receiver Type: M4 Handguard Type: Magpul MOE Black Handguards Bolt Carrier Group Included: Yes Bolt Steel: Carpenter 158 Bolt Carrier Profile: Full Auto Charging Handle included: Yes Rear Sight: Magpul MBUS Rear Flip-Up Sight Overall Length: 24.5"