Dewey B-37/40MM REPLACEMENT BRUSH B3740

Designed specifically to clean and maintain the military issue M203 (40mm) grenade launcher and 37mm variants. Two-piece, aluminum, cleaning rod breaks down into 8'' and 14'' sections for manageable transport in the field. 5/16''-27 female threads also allow rod to also be used for short barreled, riot shotguns. Includes heavy-duty, looped and wound, phosphor bronze brush loosenes and remove carbon buildup from the launcher tube. Cotton mop applies solvents and rust preventives. Replacement brushes and mops available separately.