BreakFree LP-4 LP Lubricant Preservative Squeeze Bottle (4-Fluid Ounce) Replaces grease and heavy viscosity lubes. Ideal for all firearms from semi-automatic to military/police assault weapons. Great for polymer composition automatics. Prevent galling on stainless steel and other exotic gunmetals including titanium. Doesn't dry out, harden, solidify or attract metal fines and other contaminants. Always stays in bearing area to lubricate. Environmentally safer and user friendly.