High-performance firearms deserve high-performance protection” and Hoppe’s Black delivers. Hoppe’s Black uses a formula designed for MSR’s and other high-round count firearms” but will work with any firearm. Designed to withstand a wide range of temps from -65°F to 540°F – it will prepare your firearm for any situation. Hoppe’s Black is comprised of a Gun Cleaner” Precision Oil” Copper Cleaner” Grease Syringe” and Lubricating Cloth.