A part, assembly, or system identified as essential to weapon system performance or operation to preserve life and safety of personnel
NSN 6650-00-005-8572
NSN 5985-01-578-2216
NSN 5915-01-019-1430
NSN 5965-00-021-5620
NSN 5996-00-220-3322
NSN 5965-01-078-1312
NSN 5996-01-359-4222
NSN 6105-01-609-0141
NSN 6320-00-358-1946
NSN 7035-01-021-1413
NSN 5925-00-769-6869
NSN 6110-00-712-8538