High-performance firearms deserve high-performance protection, and Hoppes Black delivers. Designed for MSRs and other high-round count firearms (but safe to use with any firearm), Hoppes Black High-Performance Precision Oil Aerosol delivers with the touch of a button. The included extension allows for lubricating oil to be placed precisely where its needed. Hoppes Black is designed to withstand a wide range of temps - from -65 degreeF to 540 degreeF - and will prepare your firearm for any situation.Features :Will not gum up with exposure to high temperaturesIndustry-best temperature range of -65deg to 540degFIncludes rust inhibitors