PSA 20" Rifle Length 5.56 NATO 1/7 Nitride A2 Freedom Rifle Kit With Carry Handle - 516447015

Barrel Length: 20"
Gas System: Rifle-length 
Barrel Steel: 4150V Chrome Moly Vanadium
Barrel Finish: Nitride
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: Flash Hider
Receiver Material: Forged 7075 T6
Receiver Type: M4
Hand guard Type: PSA Classic Tapered  Handguards
Bolt Carrier Group Included: Yes
Bolt Steel: Carpenter 158
Bolt Carrier Profile: Full-auto
Charging Handle included: Yes
Optics: Carry Handle 
Overall Length: 28"
Weight as configured: 3.5 lbs