Otis Technology Breech to Muzzle Cleaning System, .223/556 - FG-223. Replace heavy, conventional cleaning gear with the efficient and effective 0.223 Caliber/5.56-millimeter Soft pack Cleaning System from Otis. The system includes bore and chamber brushes that clean and maintain your firearms. The system uses a flexible Memory - Flex cleaning rod that ensures correct cleaning - from the breech to the muzzle - in the natural direction of the bullet. This system allows you to clean the receiver, locking lugs, chamber, shoulder, and neck easily. The system includes handy obstruction removers that can dislodge bore blockages, such as mud or snow, and push them out through the muzzle end. You can also use the obstruction removers to knock out an empty case or bullet that is lodged in the neck with just a few taps. The Soft pack Cleaning System also contains two brass slotted tips, small caliber patches, a T-handle, a 0.5-ounce tube of Otis O85 Ultra Bore Solvent and a bore reflector/flag safety. The compact system comes in a softback case that measures 4 by 4 by 2 inches.