A part, assembly, or system identified as essential to weapon system performance or operation to preserve life and safety of personnel
NSN 5985-01-563-4384
NSN 5999-01-053-0668
NSN 6220-01-290-0380
NSN 5950-01-333-7749
NSN 6620-00-586-6460
NSN 5950-01-032-6573
NSN 5985-00-179-7903
NSN 5930-01-023-0440
NSN 5975-01-174-8152
NSN 5990-00-522-3425
NSN 6320-01-388-9450
NSN 6130-01-184-3987