A part, assembly, or system identified as essential to weapon system performance or operation to preserve life and safety of personnel
NSN 6240-00-151-7642
NSN 5920-00-203-5938
NSN 6620-00-485-4136
NSN 6320-01-397-0399
NSN 4140-01-419-0198
NSN 5975-00-918-4310
NSN 5835-01-360-2657
NSN 6150-01-661-1268
NSN 5910-00-929-5905
NSN 5945-01-191-1704
NSN 6320-01-052-2118
NSN 6685-01-125-2295