A part, assembly, or system identified as essential to weapon system performance or operation to preserve life and safety of personnel
NSN 5975-00-143-4658
NSN 5945-01-150-8908
NSN 6685-01-620-2146
NSN 6130-01-073-4138
NSN 5975-00-094-5959
NSN 6130-00-202-2509
NSN 6220-00-878-7301
NSN 6220-00-405-2233
NSN 5945-01-054-3235
NSN 6105-01-431-8998
NSN 6645-01-018-7664
NSN 6650-01-426-4253