A part, assembly, or system identified as essential to weapon system performance or operation to preserve life and safety of personnel
NSN 6650-01-592-2445
NSN 6610-01-350-5590
NSN 5920-00-171-2347
NSN 5920-01-413-1608
NSN 6130-00-541-8468
NSN 5895-01-327-4153
NSN 6645-00-255-1372
NSN 5990-01-116-2181
NSN 5910-01-494-1982
NSN 5905-01-182-9212
NSN 5915-01-234-5402
NSN 5998-01-647-6052