A part, assembly, or system identified as essential to weapon system performance or operation to preserve life and safety of personnel
NSN 6240-01-304-4741
NSN 5920-01-227-1877
NSN 5920-00-243-9506
NSN 5930-01-509-9378
NSN 6145-01-379-6123
NSN 6645-00-381-9628
NSN 6620-00-379-2856
NSN 6110-00-845-4871
NSN 5960-01-462-6267
NSN 6150-01-610-3451
NSN 5895-00-294-6888
NSN 7035-00-763-6180