G-96 Crud Buster Polymer Safe Firearm Cleaner Leaves no residue. The extension tube which inserts into the valve head produces a high pressure spray that allows the solvent to penetrate and remove soluble as well as insoluble particles from the firearm. It is excellent for use on rifles shotguns and pistols. Features of G-96 Crud Buster Polymer Safe Firearm Cleaner: 13 oz Cleans and degreases firearm actions without disassembly Leaves no residue Package Contents: G-96 Crud Buster Polymer Safe Firearm Cleaner G-96 1202: Crud Buster Polymer Safe Firearm Cleaner Leaves no residue