A part, assembly, or system identified as essential to weapon system performance or operation to preserve life and safety of personnel
NSN 6645-00-503-1379
NSN 5920-00-518-3208
NSN 5925-01-208-8920
NSN 2925-01-327-3069
NSN 5895-00-300-1972
NSN 5905-01-541-5366
NSN 6650-00-299-9681
NSN 5905-01-042-7237
NSN 6645-01-551-6287
NSN 5950-01-419-0747
NSN 5985-01-449-0939
NSN 6240-01-504-6608