: Otis Technology The B.O.N.E; Tool Bolt and ...
Otis Technology B.O.N.E. Tool (5.56MM) FG-246 . The B.O.N.E. Tool was designed specifically to clean carbon and fouling from the bolt carrier assembly area of 5.56 mm /.223 or 7.62mm. This quick-clean tool scrapes fouling from the bolt, bolt carrier and firing pin. Also includes an 8-32 threaded hole to act as T-handle.