Tetra Gun Bore Boa gun cleaning rope is the easiest and quickest way to clean and lubricate inside the bore of a handgun, rifle or shotgun.  Made for a snug fit so it will last where others wear out too easily, this gun cleaning product features the embedded bronze brush for deeper scrubbing action sized to the caliber you are using.  Reusable.  Washable.
 
Available in these sizes: .22 cal. pistol and 22 rifle, .243 caliber, .270 cal., .30 cal., .32 cal., 7.92 / 8mm, 9mm, 6.5mm, .40 caliber, .45 cal., 12 gauge, 20 ga., 28 ga. and 410 ga.