Clean your AR gas tube without disassembling. The gas tube brush cleans the entire length of the gas tube without disassembling the upper receiver. Also cleans other hard-to-reach areas. Six precision-fit brushes make cleaning the receiver, chamber, bolt carrier, bore and carrier key tube easier. Includes Eliminator cleaning tool and rod. Recommended for use with the losso Bore Cleaner, losso Triple Action Solution (sold separately). Available: AR .308 cal. kit.