Mustang Rearm Kit (Manual) for MD3082 and MD3085 For Model numbers: MD2051, MD2085, MD3051, MD3052, MD3071, MD3075, MD3082 and MD3085 Contains: One 33gram CO2 cylinder and one re-arming instruction manual Use only Mustang Survival re-arm Kits Use of other re-arm kits may result in improper operation or failure to operate and you will void the products warranty