Every tool you need to easily eliminate baked-on carbon from the AR15 chamber. All implements store inside the ergonomic handle. The handle self-centers inside the upper to perfectly align with the barrel extension lugs. Easily spin the handle while making precision contact for all implements inside the chamber. Makes easy work of removing carbon. Included is the handy Pivot Lock to hold your gun open while cleaning. The smartly designed Chamber Boss - AR15...Fast, Easy, Effective.Specifications and Features: Real Avid AVAR15CB Handle stores all cleaning implements inside Handle centers tool in AR15 upper for precision cleaning Includes Pivot Lock to hold your gun open while cleaning Scraper, chamber brush, and cleaning pads all attach securely to the end of tool Scraper precisely fits barrel extension and internal chamber