Otis Receiver Brush Universal Nylon Brush 20 Count The Shooter's Choice nylon, all-purpose receiver brushes are double ended with one end for large surface scrubbing and the smaller end for precision cleaning. With nylon bristles, these brushes remove carbon and powder residue but won't scratch your firearm finish. Great for everyday use and can be used on a multitude of surfaces including wood. The brush handles are available in the signature Shooters Choice red. Includes a reusable screw top canister.