A part, assembly, or system identified as essential to weapon system performance or operation to preserve life and safety of personnel
NSN 5835-01-399-5820
NSN 5950-01-160-5410
NSN 5855-00-906-5386
NSN 6220-00-421-1846
NSN 5925-01-013-9650
NSN 6685-01-469-9294
NSN 5996-00-586-5126
NSN 6650-00-205-6282
NSN 6145-00-603-2578
NSN 5855-01-495-6457
NSN 4140-00-173-0706
NSN 4140-00-846-4786