A part, assembly, or system identified as essential to weapon system performance or operation to preserve life and safety of personnel
NSN 5965-00-612-0072
NSN 6220-01-146-0312
NSN 6135-01-187-4382
NSN 5935-01-068-1622
NSN 5930-01-337-2435
NSN 5990-01-254-3197
NSN 6620-01-288-2627
NSN 7035-00-200-5162
NSN 5998-00-193-8008
NSN 6135-01-415-1163
NSN 5985-00-591-3001
NSN 5935-01-183-3900