A part, assembly, or system identified as essential to weapon system performance or operation to preserve life and safety of personnel
NSN 5990-00-518-0684
NSN 6685-01-458-9763
NSN 6650-00-170-5095
NSN 6135-01-142-6456
NSN 6650-01-176-3257
NSN 5985-01-626-6145
NSN 5910-01-025-4385
NSN 5985-01-464-3153
NSN 6220-00-955-5612
NSN 5895-01-630-5811
NSN 5975-01-568-4563
NSN 6130-01-462-0662