A part, assembly, or system identified as essential to weapon system performance or operation to preserve life and safety of personnel
NSN 5855-01-223-0833
NSN 6620-01-438-0415
NSN 6135-01-609-0843
NSN 6650-01-633-9147
NSN 5920-01-091-3659
NSN 6130-00-133-1598
NSN 6150-00-290-8125
NSN 5930-01-138-0362
NSN 6150-01-511-6389
NSN 4140-00-835-3610
NSN 6610-00-633-4338
NSN 5895-00-854-8637