-Buffer Tube Milling File (intended to shave down the best of an AR-10 Buffer tube so that the charging handle can obvious on some upper/reduce combos) The underside with the Ghost Gunner 3 is vacant. There is not any floor plate so chips will tumble many of the way by. https://ghostgunnerforsale05937.thenerdsblog.com/38588760/getting-my-ghost-gunner-to-work