In order to remove carbon and fouling from the bolt carrier assembly region of MSR/AR style rifles, the B.O.N.E.® Tool was created.

This fast-cleaning tool removes fouling from the firing pin, bolt, and bolt carrier. has an 8-32 threaded hole to use as a T-handle as well. 5.56mm or 7.62mm MSR/AR type rifles are compatible.

Take the difficulty out of cleaning the chamber area of an MSR/AR style rifle with the use of the OTIS Star chamber cleaning tool. This tool quickly and effectively cleans the star chamber and locking lug area in just a few twists. It features a parkerised steel scraper to remove fouling build-up and felt cleaning pads to pick up the fouling loosened by the scraper. The coated brass nose piece centres the tool in the chamber for proper cleaning, while ensuring it won’t scratch or damage the firearm.

Some of the most important and difficult-to-reach parts of your gun may be cleaned with the help of the OTIS MSR/AR Maintenance Tool Set. The locking lugs, slides, bolt face, rails, and any other difficult-to-reach regions can all be properly cleaned with these non-scratching tools. These parts are compatible with current OTIS cleaning kits and can be purchased as individual add-ons for any kit.