Brownells 5.56mm NATO Chamber Hone 400 Grit

The Brownells 5.56mm NATO Chamber Hone is a precision rifle chamber polishing tool designed to smooth and deburr chamber walls for improved feeding, extraction, and overall performance. Using 400-grit abrasive, it removes light tool marks, corrosion, and rough surfaces from the chamber without altering headspace or critical dimensions. Ideal for gunsmiths and serious shooters maintaining or refurbishing 5.56mm NATO chambered rifles.