The Advanced Small Arms Cleaning Kit (SACK) contains everything needed to maintain a military-style weapon in the field and in garrison. The M-Pro7 Gun Cleaner improves weapon performance by removing layers of fouling and embedded carbon while conditioning the bore to help prevent future buildup. Formulated from technology with the lowest known friction coefficient, M-Pro7 Gun Oil LPX provides unparalleled protection against wear, humidity and moisture (including saltwater) and leaves a long-lasting film that repels dust and dirt. MSRP $228.