A part, assembly, or system identified as essential to weapon system performance or operation to preserve life and safety of personnel
NSN 5925-01-453-0168
NSN 5990-00-021-6919
NSN 5910-00-284-8295
NSN 6650-01-258-0811
NSN 6610-00-432-7162
NSN 5950-00-853-4080
NSN 6320-01-607-1491
NSN 5930-01-362-8703
NSN 5915-00-789-2193
NSN 5999-01-268-7360
NSN 6135-01-614-5335
NSN 6220-01-066-1193