Item: PA04006

Barrel Length: 20″
Gas System: Rifle-length
Barrel Profile: A2 Style
Barrel Steel: 4150V Chrome Moly Vanadium
Barrel Finish: Melonite
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 FSB
Muzzle Device: A2 Style
Receiver Material: Forged 7075 T6
Receiver Type: M4
Hand guard Type: PSA classic Drop in Polymer
Bolt Carrier Group Included: Yes
Bolt Steel: Carpenter 158
Bolt Carrier Profile: Full-auto
Charging Handle Included: Yes
Overall Length: 35″
Buttstock: PSA A2
Grip: Classic A2
Weight as configured: 6.5 lbs.