A part, assembly, or system identified as essential to weapon system performance or operation to preserve life and safety of personnel
NSN 6645-01-411-5657
NSN 5925-01-555-8524
NSN 6645-01-255-0391
NSN 6685-01-464-8406
NSN 5895-01-106-3532
NSN 6150-01-220-5604
NSN 6620-01-421-3917
NSN 6240-00-342-9756
NSN 6150-01-323-7274
NSN 6135-00-299-6918
NSN 5915-01-586-6546
NSN 5990-00-008-1828