The Otis Bronze Chamber Brush (Otis part no. FG368HT) is a precision cleaning tool sized for 7.62mm and .308 caliber rifles. Otis Technologies designed the tapered bronze bristles to scrub the chamber neck and shoulder, the areas where fouling tends to build up most stubbornly, while steel bristles at the base clean the star chamber of the locking lugs. The brass stem is cold welded to the core rather than crimped, and the tip is folded instead of cut for durability under repeated use. With a standard 8-32 thread, it attaches directly to any Otis or compatible rod handle for quick, controlled cleaning.

Key Specifications

• Sized for 7.62mm/.308 rifles, matching the brush geometry to the caliber’s chamber dimensions.
• Threaded to a standard 8-32 thread pattern, compatible with common cleaning rod handles.
• Classified as a chamber brush, purpose-built for the chamber neck, shoulder, and locking lug area rather than the bore itself.
• Measures approximately 1 inch in overall brush length.
• Ships at roughly 0.05 lb., light enough to carry as a spare in any range bag.

Frequently Asked Questions

What part of the rifle does this brush clean? It’s built specifically for the chamber neck, shoulder, and the locking lug star chamber.

Will this brush fit a standard cleaning rod? Yes, it uses a standard 8-32 thread that fits most compatible rod handles.

Buy the Otis Bronze Chamber Brush

Get a proper chamber clean on your 7.62mm/.308 rifle with this brush from Otis Technologies. Browse more gun cleaning kits and supplies and order from our Lubbock, Texas gun shop for fast, reliable shipping.