PSA AR-15 16″ Midlength 5.56 NATO 1:7 Nitride 13.5″ Lightweight M-Lok Upper W/BCG, CH, & MBUS Sight Set

Barrel Length: 16″

Gas System: Mid-length

Barrel Profile: A2

Barrel Steel: Chrome-Moly Vanadium

Barrel Finish: Melonite

Chrome Lining: None

Muzzle Thread: 1/2-28

Chamber: 5.56 NATO

Twist Rate: 1:7

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 13.5″ M-Lok Lightweight Rail

Bolt Carrier Group Included: Yes

Bolt Steel: Carpenter 158

Bolt Carrier Profile: Full-Auto

Charging Handle Included: Yes

Overall Length: 24.5″