KleenBore 37/40MM Bronze Bore Mop
The KleenBore 37/40mm Cotton Bore Mop Military Style Brushes were designed specifically for maintaining both 37mm/40mm Gas and Grenade Launchers. The bore brush is manufactured out of sturdy steel core wire with ridged phosphor bronze bristles. These bristles are rugged enough to handle the toughest of combinations of fouling, yet gentle enough to not damage the bore. Packaged separately in a storage clamshell.