1/2 lb. cleaning system replaces over 3 lbs. of conventional gear. A complete system that not only cleans the barrel but also has the special tools to clean and maintain the receiver trigger group bolt magazine tube and gas system. Components include Memory Flex cleaning rod a 12/10 gauge bore brush all-caliber patches Otis O85 Ultra Bore solvent patch savers T-handle thread connector and a bore reflector/flag safety.