Otis BONE Tool for 223 or 5.56 AR Style Bolt Carriers #FG-246

Otis Technology

MSR/AR owners know the importance of a clean bolt and bolt carrier group.  Carbon and fouling can build-up in these areas, causing jams and malfunctions.  The B.O.N.E. tool was designed specifically to clean the bolt carrier assembly area.  Simply insert the bolt into the U-shaped end of the tool and twist to scrape fouling.  Use the bolt carrier reamer to scrape carbon from the bolt carrier.


  • Caliber Specific for .223 Remington & 5.56x45 bolt carriers
  • Includes a 8-32 threaded hole to act as a T-handle
  • One tool cleans the critical areas of your firearm
    • Bolt
    • Bolt carrier
    • Firing pin

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