A part, assembly, or system identified as essential to weapon system performance or operation to preserve life and safety of personnel
NSN 6320-01-452-2394
NSN 2925-01-190-9352
NSN 5990-00-883-2962
NSN 5895-00-106-1239
NSN 5920-01-062-7106
NSN 5960-01-457-7432
NSN 6650-00-613-8147
NSN 6610-00-155-1334
NSN 6620-01-475-3472
NSN 5998-00-472-1054
NSN 5990-01-147-5225
NSN 5950-01-354-0315