Hoppes 9 Buttstock Elite Cleaning Kit gives your AR15 its deepest cleaning ever. This Hoppe's kit fits right into the buttstock of your firearm. The Next Generation in Gun Cleaning, Hoppe's Elite technology was initially developed to clean the weapons on F16 fighter planes. Today, that same technology is used in Hoppe's Elite Gun Cleaner to blast through fouling, giving you a perfectly clean bore. After continued use, Hoppes Elite conditions your firearm bore to resist additional fouling. Combine your cleaning with Hoppe's Elite Gun Oil to protect your firearm from rust and corrosion. This super slick oil coats the entire interior surface, resisting puddling, for the finest protection you can give your firearm. The Hoppe's 9 Elite Cleaning Kit includes: 3 Hoppe's Elite Gun Cleaner, .25 oz.; 3 Hoppe's Elite Gun Oil, .25 oz.; 1 Hoppe's BoreSnake, 5.56mm/.223 caliber.