This 8 oz. cleaning system replaces over 3 lbs. of conventional gear. With the flexible cleaning rod it is only possible to clean correctly, from breech to muzzle. The receiver, locking lugs, chamber, shoulder and neck can easily be cleaned. Bore obstructions, mud or snow, can be dislodged out the muzzle end. A stuck empty case or bullet lodged in the neck can be easily knocked out. For instruction go to the How To's, then Video Clips & Instruction Sheets, Then The Demonstration Video on How to Clean your 5.56