The tapered bronze bristles of the Otis chamber brush scrub the chamber, neck and shoulder. The steel bristles at the base scrub the star chamber of the locking lugs. The brass stem is cold welded to the core, and the tip is folded, not cut. The chamber brush has a standard 8-32 thread.

5.56MM (essential for anyone that shoots an M4/M16/AR15)

About Otis

Otis Technology manufactures the most advanced gun cleaning systems and accessories in the world. The company strives to introduce the newest and most advanced technologies to the gun cleaning market.All of their products and components are manufactured and assembled in a state-of-the-art manufacturing facility in Lyons Falls and Phoenix, New York.  All products are MADE IN THE USA!

• 1985 – Otis Technology established
• 1997 – Relocated to Laura Street property
• 2005, August – State-of-the-art manufacturing facility completed
• 2008, October – New warehouse completed
• 2009, June – Purchased additional acreage for parking
• 2010 – R&D Center for Excellence opened in Phoenix, NY