A part, assembly, or system identified as essential to weapon system performance or operation to preserve life and safety of personnel
NSN 6145-01-463-9001
NSN 5965-01-365-0101
NSN 5935-00-982-9533
NSN 5910-01-146-4784
NSN 6685-00-342-9408
NSN 5965-00-527-8818
NSN 4140-01-306-1421
NSN 5855-00-285-8172
NSN 5965-01-642-7660
NSN 6135-01-104-3790
NSN 6610-00-225-2829
NSN 6650-00-834-9062