Hydrostatic Inflator Re-arm Kit::MA7214 The Auto Hydrostatic Re-Arm Kit contains everything necessary to re-arm your Mustang auto Hydrostatic inflatable after deployment. The auto Hydrostatic inflator cap and body on all automatic PFDs should be replaced before the date on the cap :an Auto Hydrostatic inflator which includes a cap, body (with 38gram CO2 cylinder), metal key and a 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 will void the product's maintenance can reduce the possibility of premature inflation. Refer to your Owner's Manual for maintenance schedule.