TacFire DPMS Complete Upper Assembly Low Profile .308 Winchester 20in Type III Hard Anodized Black Large. 308 WIN barrel along with a 15" M-LOK freefloating handguard. BCG and charging handle are included in this build. Specifications for TacFire DPMS .308 Winchester Complete Upper Assembly: Manufacturer: TacFire Caliber: .308 Winchester Barrel Profile: Government Barrel Twist Rate: 1-10 Threads per Inch: 5/8x34 Handguard Type: Free-Float Muzzle Device: A2 Flash Hider Finish: Type III Hard Anodized Color: Black Gun Model: AR-15 Condition: New Gas Block Journal Size-Diameter: .075 in Gun Rail: M-LOK Gun Make: AR Platform Additional Features: DPMS Spec Bolt Carrier Included Accessories: None Barrel Material: 4150 Chrome Moly Vanadium Charging Handle Included: MIL-SPEC Magazine Included: No Mount Type: M-LOK Country of Origin: USA Features of TacFire DPMS .308 Winchester Complete Upper Assembly DPMS .308 Winchester upper receiver with A2 flash hider Package Contents: TacFire DPMS .308 Winchester Complete Upper Assembly Bolt Carrier Group / Charging Handle What firearm models does the manufacturer say TacFire DPMS .308 Winchester Complete Upper Assembly is compatible with? The manufacturer says that TacFire DPMS .308 Winchester Complete Upper Assembly is compatible with AR-15TacFire BU-308-20: DPMS Complete Upper Assembly Low Profile .308 Winchester 20in Type III Hard Anodized Black Large