Break-Free Gun Lubricant and Preservative is beneficial to all shooters, but especially heavy volume shooters of rapid fire automatic handguns and rifles including Law Enforcement Officers and all target shooters. Originally developed for manufacturers of heavy automatic military cannons to keep their weapons working under long and sustained fire during battle. Consistent cyclic rates are maintained and gun actions operate smoother and easier even under adverse conditions and extended firing periods. Replaces grease and heavy viscosity lubes. 4 oz.