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Barrel Length: 20"
Gas System: Rifle-length
Barrel Profile: A2 Style
Barrel Steel: 416R
Barrel Finish: Stainless Steel
Chrome Lining: None
Muzzle Thread: 1/2-28
Chamber: 224 Valkyrie
Twist Rate: 1:6.5
Barrel Extension: M4
Diameter at Gas Block: .750
Gas Block Type: Low profile adjustable gas block
Muzzle Device: A2 Flash Hider
Receiver Material: Forged 7075 T6
Receiver Type: M4
Fire Control Group: PSA 2-Stage Nickel Boron Fire Control Group
Handguard Type: PSA 15" Lightweight M-Lok Free Float Rail
Grip: Magpul MOE Grip, Black
Stock: Magpul MOE Stock, Black
Trigger Guard: Magpul MOE Trigger Guard, Black
Bolt Carrier Group Included: Yes
Bolt Steel: 9310, Nitride Coated
Bolt Carrier Profile: Full-auto
Charging Handle Included: Yes
The 224 Valkyrie upper is designed to function with any Mil-Spec AR-15 Lower Receiver and is to be used with a standard 6.8 SPC Magazine.