Works on handguns, rifles & shotguns. The Gun Boss pull-through system cleans and protects firearms by pulling fouling out of the muzzle, rather than back into the chamber and action. Compact, weather-resistant, molded case. No annoying loose parts. Smartly organized, each brush, mop, jag, patch tip, cable and handle is held securely in place. This sets the standard for a multi-gun portable cleaning kit.