TacFire Complete M-LOK Upper Assembly .300 Blackout 16in Type III Hard Anodized Black Large. 300 Blackout Complete M-LOK Upper Assembly then you've arrived at the absolute correct place.. Formulated by using several of the most extremely durable and long lasting materials in existence these AR15 Upper Receivers through TacFire will present you with something that will give a great deal of consistency. TacFire has been generating high quality merchandise for a number of years and the TacFire .300 Blackout Complete M-LOK Upper Assembly is their way of revealing just how much they care. At OpticsPlanet we ensure that it is our responsibility to receive the perfect solution for all your requirements and exhibiting the TacFire .300 Blackout Complete M-LOK Upper Assembly is a thing that we are pleased to offer. Specifications for TacFire .300 Blackout Complete M-LOK Upper Assembly: Manufacturer: TacFire Caliber: .300 AAC Blackout Barrel Profile: Government Gas System Length: Pistol Length Barrel Twist Rate: 1-8 Threads per Inch: 5/8x34 Handguard Type: Free-Float Muzzle Device: A2 Flash Hider Finish: Type III Hard Anodized Color: Black Gas Block Journal Size-Diameter: .075 in Gun Rail: M-LOK Condition: New Barrel Material: 4150 Chrome Moly Vanadium Bolt Carrier Group Included: MIL-SPEC Magazine Included: No Charging Handle Included: MIL-SPEC Mount Type: M-LOK Country of Origin: USA Features of TacFire .300 Blackout Complete M-LOK Upper Assembly Mil-Spec upper receiver chambered in .300 Blackout with A2 flash hider Package Contents: TacFire .300 Blackout Complete M-LOK Upper Assembly Bolt Carrier Group / Charging Handle TacFire BU-300-16: Complete M-LOK Upper Assembly .300 Blackout 16in Type III Hard Anodized Black Large