A part, assembly, or system identified as essential to weapon system performance or operation to preserve life and safety of personnel
NSN 6685-01-433-4365
NSN 6320-01-458-1853
NSN 5950-01-089-9860
NSN 5950-01-146-5548
NSN 5985-01-029-7543
NSN 5935-01-433-1914
NSN 5999-01-534-7364
NSN 5915-01-439-5539
NSN 5998-01-172-4774
NSN 6145-00-757-9479
NSN 5996-01-207-0804
NSN 6110-01-575-0133