Shop Palmetto State Armory for all gun cleaning and maintenance needs! Birchwood Casey Synthetic Gun Oil is a superior gun oil for all climates that contains PTFE lubricant that works to reduce friction between two connected surfaces. The natural solvency of the oil cleans as it oils while its low evaporation rate assures protection against rust, thus providing lubrication and protection to all firearm metal surfaces. Birchwood Casey Synthetic Gun Oil will not gum up or lose its viscosity under extreme temperature variations (from -55AdegF to 300AdegF). NOTE: THIS ITEM CANNOT BE SHIPPED TO AN ADDRESS WITHIN THE STATE OF CALIFORNIA