The Otis B.O.N.E. Tool is a purpose-built cleaning tool for the bolt carrier assembly area of AR-15/M16 style rifles chambered for 223/5.56 NATO. It scrapes carbon and fouling from the bolt, bolt carrier and firing pin to aid routine maintenance. The tool includes an 8-32 threaded hole intended to accept a T-handle for leverage during cleaning.
Key Specifications
- Designed to fit AR-15/M16 platforms for bolt carrier maintenance.
- Compatible with 223/5.56 NATO size as listed in product attributes.
- Constructed from Steel for repeat use in routine maintenance tasks.
- Features an 8-32 threaded hole to act as a T-handle attachment point.
- Product type listed as B.O.N.E. Tool for bolt carrier cleaning tasks.
- The product dimensions are listed as 0.75 X 2.45 X 8.85.
- Quantity per package is 1.
- Other noted feature: EFFECTIVELY CLEANS THE BOLT and related areas according to the manufacturer attributes.
This compact tool provides a straightforward, mechanical way to address carbon buildup in the bolt carrier group area, helping preserve reliable function and reduce the need for extended field stripping. Its simple form and steel construction make it a practical addition to an armorer’s or owner’s maintenance kit, offering a targeted method to scrape fouling from the bolt, carrier and firing pin without introducing complex mechanisms.
This description was generated with AI and may contain errors. Verify specifications and legal restrictions with the manufacturer before purchase. Provided “as-is” without warranties or guarantees.




