New GUN Barrel Bore Cleaner .17 .22 Cal .308 .380 9mm Caliber 12 20 28 Gauge Rifle/Pistol/Shotgun Cleaning (G05-F : .17cal & 4.5mm) Buyer Can get a faster shipping service ( E-packet, 7~12 working days delivered , for USA only ) if you can order 20 pcs or more at one time ; We provide 20 Calibers of the Gun Barrel cleaners, Welcome for retail and wholesale ; The World' s Fastest Gun Barrel Cleaner ; Clean Gun Barrels in 10 seconds ; Weight : about 30g~70g per unit ; Almost all of my customers are satisfied with the quality of the products ;