TacFire AR-15 Complete Upper Features The TacFire AR-15 Complete Upper is built around a 10.50 inch barrel finished in black nitride a coating that resists corrosion and wear while standing up to the heat generated by repeated strings of fire. A 1 in 8 inch twist rate stabilizes a broad range of 5.56 NATO bullet weights giving builders flexibility in ammunition choice without sacrificing accuracy. The 1/2x28 threaded muzzle accepts a wide variety of muzzle devices from a simple flash hider to a suppressor letting the end user tailor the upper to their intended use. This shorter barrel length makes the upper well suited to a compact maneuverable carbine build for home defense or range use. A 10 inch M-LOK handguard runs the length of the barrel and provides direct attachment points for lights foregrips and slings without needing a separate rail adapter. The M-LOK system keeps the handguard slim and lightweight compared to older quad rail designs improving handling and reducing fatigue during extended range sessions. Because this is a complete upper it arrives ready to pin onto a compatible AR-15 lower without the builder needing to source a barrel handguard and gas system separately. For anyone building or upgrading an AR-15 pistol or short barreled configuration this TacFire upper offers a straightforward path to a finished reliable 5.56 platform. TacFire AR-15 Complete Upper Specifications Brand: TacFire Type: Complete Upper Caliber: 5.56 Barrel Length: 10.50 Barrel Finish: Black Nitride Twist Rate: 1:8 Handguard: M-LOK 10 Muzzle Thread: 1/2x28 Available At: GrabAGun