Mustang Re Arm Kit OUse only Mustang Survival rearm kits. Use of other rearm kits may result in improper operation or failure to operate and will void the product's warranty. Regular maintenance can reduce the possibility of inadvertent inflation. For a maintenance schedule, refer to your owner's manual. You should rearm the inflator before the expiry date on the cap passes. Used on Elite 190, Model MD3170 Features This rearm kit contains: One 38 gram CO2 cylinder