A part, assembly, or system identified as essential to weapon system performance or operation to preserve life and safety of personnel
NSN 5990-00-636-4218
NSN 5965-00-532-2636
NSN 5915-00-891-1467
NSN 5950-01-233-9618
NSN 5930-01-046-9443
NSN 5965-00-605-8239
NSN 5975-01-406-5337
NSN 6220-00-947-3495
NSN 6110-01-322-8585
NSN 5945-00-269-5375
NSN 5855-01-201-4857
NSN 5985-00-221-5566