A part, assembly, or system identified as essential to weapon system performance or operation to preserve life and safety of personnel
NSN 6320-01-089-9086
NSN 5910-01-227-1939
NSN 5835-01-568-7796
NSN 6620-00-632-3631
NSN 6145-01-151-4102
NSN 5925-01-164-9681
NSN 5945-01-502-3196
NSN 4140-00-476-0672
NSN 2925-01-586-9280
NSN 6650-00-879-5834
NSN 5960-00-281-0824
NSN 5895-01-515-9710