A part, assembly, or system identified as essential to weapon system performance or operation to preserve life and safety of personnel
NSN 6110-01-633-9660
NSN 6645-01-456-2161
NSN 5905-01-190-2503
NSN 6145-00-843-7878
NSN 5950-01-195-9893
NSN 5905-00-274-3789
NSN 5999-01-352-8861
NSN 6610-01-303-7913
NSN 6240-01-633-9357
NSN 5930-00-283-6875
NSN 5960-01-526-3843
NSN 4140-00-679-9512