Birchwood's Moly Lube Dry Film Firearm Lubricant penetrates, forming a smooth, extremely slippery surface on metal. Molybdenum disulfide particles are deposited onto metal surfaces and gives maximum lubricity and wear resistance, even under extreme temperatures and pressures. It won't attract and hold dust, dirt or other contaminants. It uses an almost instant-drying solvent/degreaser as the carrier in a convenient, aerosol can. It is especially suited for internal lubrication of moving parts on all firearms, and is recommended for precision airguns where petroleum lubricants are not advised.