Constantly loosing that battle over rust? Well now you can win the war and protect your valuable gear. Stop corrosion in its tracks! Inhibitor VCI plugs are designed to fit into your rifle to protect not only the barrel wall from rust and corrosion, but your firing mechanisms as well. Includes three numbered plugs, to fit 222-223 cal, 243, 308 7mm-08cal, 270, 30-06 cal. Place in chamber to protect gun barrel - the Inhibitor's vapours will protect it from corrosion, while leaving no scent residue!