TacFire AR-15 Buffer Tube Kit Features The TacFire AR-15 Buffer Tube Kit supplies the complete mil-spec receiver extension assembly needed to mount a 6-position collapsible stock on a standard AR-15 lower receiver. Included in the kit are a mil-spec 6-position buffer tube a 3 oz carbine buffer and a carbine length buffer spring matched components that keep the action cycling reliably with the lighter carbine-length recoil spring system. The dual loop sling adapter end plate adds two attachment points for a sling giving shooters flexible carry options without additional hardware. A castle nut secures the buffer tube to the receiver completing an installation that keeps the stock assembly tight and rattle-free. Constructed from steel and aluminum with a black anodized finish the kit is built to resist wear from repeated use in both training and field environments. At 8 inches in length and roughly 11 oz in weight the buffer tube is sized to mil-spec dimensions for compatibility with a wide range of aftermarket collapsible stocks. Made in the USA the kit reflects a domestic manufacturing standard that many AR-15 builders look for in core rifle components. This buffer tube kit is available for sale at GrabAGun for AR-15 owners chambered in 5.56 NATO or .223 Remington who need a complete mil-spec stock foundation. TacFire AR-15 Buffer Tube Kit Specifications Manufacturer: TacFire Model: AR-15 Buffer Tube Kit Compatible Hosts: AR-15 Caliber: 5.56 / .223 Rem Color: Black Finish: Anodized Material: Steel Aluminum Length: 8 Weight: 11 oz Country of Origin: USA Available At: GrabAGun