A part, assembly, or system identified as essential to weapon system performance or operation to preserve life and safety of personnel
NSN 5990-01-621-1777
NSN 5999-00-830-4130
NSN 5910-01-293-9917
NSN 6145-01-145-4654
NSN 6220-01-370-2059
NSN 6610-01-147-7221
NSN 6620-01-007-4249
NSN 5895-01-051-5885
NSN 6610-01-612-8327
NSN 5960-00-827-1201
NSN 5999-01-441-9308
NSN 5998-01-220-7412