TacFire AR-15 Buffer Tube Kit Features The Tacfire H2 Carbine Buffer Tube Kit is built around a mil-spec pistol buffer tube giving builders a standard sized tube that is compatible with most mil-spec stocks and braces on the market. A foam insert lines the tube helping dampen noise and vibration during cycling for a smoother shooting experience. The carbine length buffer spring is matched to work with the tube for reliable bolt carrier group cycling across a range of loads. A castle nut secures the tube to the receiver extension threads keeping the assembly tight and properly indexed. A QD end plate is included with this kit giving the shooter an integrated quick detach sling mounting point without needing to source one separately. This is a convenient addition for anyone building a defensive or range rifle who wants sling compatibility from the start. At roughly 8 inches in length and 13 ounces in weight the kit adds minimal bulk to a finished build. Finished in black to match most AR-15 builds the Tacfire H2 Carbine Buffer Tube Kit is available for sale at GrabAGun for builders completing a lower receiver. TacFire AR-15 Buffer Tube Kit Specifications Manufacturer: TacFire Model: H2 Carbine Buffer Tube Kit Type: Buffer Tube Kit Compatible Hosts: AR-15 Color: Black Length: 8 Weight: 13 oz Package Quantity: 1 Available At: GrabAGun