TacFire AR Build Kit Features The TacFire AR Build Kit centers on a 16 inch .300 AAC Blackout barrel with a 1:7 twist rate paired with a spiral fluted flash can threaded 1/2x28 and fitted with a crusher washer for a secure mount. A low profile mil-spec steel gas block and a pistol length steel gas tube with pin manage gas flow for reliable semi-auto cycling. An ultra slim clamp-on M-LOK free float handguard keeps the barrel unobstructed for better heat dissipation and gives the builder a full length of rail-free real estate for accessories. The stripped billet upper receiver is machined with M4 feed ramps which smooths feeding from the magazine into the chamber. Rounding out the upper the kit includes a steel and aluminum mil-spec charging handle a dust cover and a standard AR15 forward assist for positive bolt closure. On the lower side builders get a standard receiver end plate a mil-spec commercial castle nut a pistol buffer tube with foam padding and a 3 ounce buffer with spring. A complete USA made lower parts kit and a black A2 style pistol grip finish the build so the only major components left to source are a stripped lower receiver and furniture of choice. Finished entirely in black nitride this kit gives AR-platform builders a durable corrosion resistant .300 Blackout build in one package. TacFire AR Build Kit Specifications Manufacturer: TacFire Model: AR Build Kit Caliber: .300 AAC Blackout Compatible Hosts: AR-Platform Color: Black Nitride Action: Semi-Auto Twist Rate: 1:7 Thread Pattern: 1/2x28 Grip Type: Black A2 Pistol Grip Includes: Lower Parts Kit Barrel Length: 16 Available At: GrabAGun