The Bore Snake Rifle Cleaner Is the World's Fastest Gun Bore Cleaner Cleans gun bores in seconds 160 times more surface area than a patch, cleans like no other product Weighted cord slips easily through the barrel. Grasp and pull cleaning cord through bore. Caliber or gauge is stamped into the brass weight. Bore Brush embedded in the cord and loosens hard deposits. Head removes foreign particles prior to the scrubbing action of the brush.