Otis B.O.N.E. AR-15/M16 Carbon Cleaning Tool

The Otis B.O.N.E. Tool FG-246 is a compact scraper designed for carbon buildup on AR-15 and M16 bolt assemblies. Its shaped working surfaces address the bolt, bolt carrier, and firing pin areas where fouling can accumulate during regular use. The tool is sized for the 5.56/.223 AR platform rather than being a generic flat scraper.

A dedicated carbon tool can speed up routine cleaning by matching the contours of the parts being serviced. The B.O.N.E. design lets one small piece handle several common scraping points, reducing the number of picks or improvised tools needed at the bench. Its simple one-piece format is also easy to keep in a field cleaning kit.

FG-246 is a useful choice for shooters who maintain AR-15 or M16-pattern rifles and want a purpose-built carbon-removal tool. It complements brushes, solvent, and patches rather than replacing the rest of a complete cleaning system. Browse more gun cleaning & maintenance gear for rods, cleaners, and armorer tools.

• Designed for AR-15 and M16 5.56/.223 platforms
• Scrapes carbon from the bolt, bolt carrier, and firing pin areas
• Compact multi-surface cleaning tool
• Easy to add to a field or bench cleaning kit