TacFire Mil-Spec Buffer Tube Kit Features The TacFire Mil-Spec Buffer Tube Kit is built around a mil-spec dimension six position buffer tube measuring 13.4 inches matching the dimensions most AR-15 and M4 stocks are designed around. The included six position stock adjusts to fit a range of shooter statures and shooting positions while the attached butt pad softens the stock s contact against the shoulder. A carbine length buffer spring and 3 ounce buffer work together inside the tube to manage the bolt carrier s cycle and keep the action running smoothly. Constructed from a mix of steel aluminum and polymer the kit balances durability with manageable weight. A regular end plate and castle nut are included to properly secure the buffer tube to the receiver giving builders every part needed to finish the stock assembly without hunting down separate components. The matte black anodized finish ties the kit together visually with most mil-spec AR-15 builds. Because every part in the kit is sized to mil-spec tolerances it fits the overwhelming majority of AR-15 and M4 pattern lowers on the market. The TacFire Mil-Spec Buffer Tube Kit is available for sale at GrabAGun for builders assembling or upgrading a six position stock setup. TacFire Mil-Spec Buffer Tube Kit Specifications Manufacturer: TacFire Model: Mil-Spec Buffer Tube Compatible Hosts: AR-15 Color: Black Finish: Matte Anodized Length: 13.4 Material: Steel Aluminum Polymer Pieces: 6 Available At: GrabAGun