A part, assembly, or system identified as essential to weapon system performance or operation to preserve life and safety of personnel
NSN 5990-00-965-0495
NSN 5945-00-271-3216
NSN 5999-00-076-1391
NSN 5998-01-100-2428
NSN 6650-00-159-7117
NSN 5935-01-023-1548
NSN 6685-01-338-6129
NSN 2925-01-519-1707
NSN 5950-01-158-4361
NSN 5905-01-554-3911
NSN 5990-01-112-3177
NSN 5920-01-567-6520