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. Manufacturer Part Number: B3740