OTIS BONE TOOL AR-15

Description

The Otis B.O.N.E. Tool is a purpose-built cleaning instrument for the AR-15 bolt carrier assembly, designed to address the areas that generic cleaning rods and patches struggle to reach. The name stands for Bolt, Outstanding, Needed Equipment — and the tool is shaped to match the geometry of the bolt, bolt carrier, and firing pin so that carbon and fouling can be scraped away directly rather than pushed around.

Where a standard cleaning rod handles the bore, the B.O.N.E. Tool focuses on the components that accumulate the heaviest carbon deposits in a direct-impingement system: the bolt tail, the interior of the carrier key, and the firing pin channel. These surfaces are difficult to address with patches alone, and neglecting them is a common cause of reliability issues over extended round counts.

The 8-32 threaded hole serves a second purpose beyond accepting cleaning accessories — it lets the tool function as a T-handle when a rod or brush is threaded through it, giving you a secure grip for working stubborn fouling loose without improvising with whatever is at hand. That threading makes it compatible with standard Otis cleaning rod sections, so it integrates with existing Otis kits rather than sitting apart from them.

The tool is made from steel, which holds up to repeated scraping use without deforming at the edges. It is compact enough to drop into a cleaning kit, a chest rig pocket, or a rifle bag side pouch, which makes it practical to carry to the range rather than leaving it on the bench at home. For anyone running an AR-15 in volume — training, competition, or extended range sessions — having the right geometry for bolt carrier cleaning is more efficient than working around tools that were not designed for the job.