A device to clean a firearm bore comprising: a. a molded plastic shank having: i. parallel rings (106a, 106b, 106c) spaced respectively between parallel spacers (110a, 110b, 110c, 110d) along a mid-length of the shank; and ii. a threaded free end adapted in size and shape to be screwed into a gun cleaning rod; b. a polyurethane foam cover over all the rings (106a, 106b, 106c) and all the spacers (110a, 110b, 110c, 110d), wherein the cover is affixed by thermal bonding to the shank; c. rifling-cleaning means for allowing the device to fit into any rifling within the bore for cleaning, wherein the means comprises: i. the polyurethane foam cover is wider than the bore, prior to the device cleaning the bore, whereby the cover compresses upon the device being placed inside the bore; and ii. compression of the polyurethane foam cover, within the bore, is limited by the rings (106a, 106b, 106c) and spacers (110a, 110b, 110c, 110d); d. whereby when the device is pushed within the bore: i. the device is tightly fit into the bore and loosens residue for the polyurethane foam cover to absorb; and ii. compressive forces, seeking to expand the compressed polyurethane foam cover within the bore, allow the cover to fit into any rifling within the bore for cleaning. a. a molded plastic shank having: i. parallel rings (106a, 106b, 106c) spaced respectively between parallel spacers (110a, 110b, 110c, 110d) along a mid-length of the shank; and ii. a threaded free end adapted in size and shape to be screwed into a gun cleaning rod; i. parallel rings (106a, 106b, 106c) spaced respectively between parallel spacers (110a, 110b, 110c, 110d) along a mid-length of the shank; and ii. a threaded free end adapted in size and shape to be screwed into a gun cleaning rod; b. a polyurethane foam cover over all the rings (106a, 106b, 106c) and all the spacers (110a, 110b, 110c, 110d), wherein the cover is affixed by thermal bonding to the shank; c. rifling-cleaning means for allowing the device to fit into any rifling within the bore for cleaning, wherein the means comprises: i. the polyurethane foam cover is wider than the bore, prior to the device cleaning the bore, whereby the cover compresses upon the device being placed inside the bore; and ii. compression of the polyurethane foam cover, within the bore, is limited by the rings (106a, 106b, 106c) and spacers (110a, 110b, 110c, 110d); i. the polyurethane foam cover is wider than the bore, prior to the device cleaning the bore, whereby the cover compresses upon the device being placed inside the bore; and ii. compression of the polyurethane foam cover, within the bore, is limited by the rings (106a, 106b, 106c) and spacers (110a, 110b, 110c, 110d); d. whereby when the device is pushed within the bore: i. the device is tightly fit into the bore and loosens residue for the polyurethane foam cover to absorb; and ii. compressive forces, seeking to expand the compressed polyurethane foam cover within the bore, allow the cover to fit into any rifling within the bore for cleaning. i. the device is tightly fit into the bore and loosens residue for the polyurethane foam cover to absorb; and ii. compressive forces, seeking to expand the compressed polyurethane foam cover within the bore, allow the cover to fit into any rifling within the bore for cleaning.