WMN_TRULYSTEP New Gun Barrel Rope Cleaner .17 .22 Cal .308 .380 9mm Caliber 12 20 28 Gauge Rifle/Pistol/Shotgun Cleaning &hellip; We provide 20 calibers of the gun barrel cleaners, welcome for retail and wholesale The world' S fastest gun barrel cleaner and clean gun barrels in 10 seconds The gun barrel can be washed easily by hands