A part, assembly, or system identified as essential to weapon system performance or operation to preserve life and safety of personnel
NSN 6135-01-067-8331
NSN 6320-01-021-6633
NSN 5990-01-510-4699
NSN 6150-01-258-6293
NSN 6105-01-109-9616
NSN 5990-01-181-4143
NSN 6685-00-083-6602
NSN 6110-01-106-4440
NSN 5950-00-148-7931
NSN 5915-01-618-4057
NSN 5985-01-540-2990
NSN 5915-00-835-9413