A part, assembly, or system identified as essential to weapon system performance or operation to preserve life and safety of personnel
NSN 5975-01-014-5493
NSN 5999-01-519-7910
NSN 6145-01-499-7795
NSN 5960-01-487-6436
NSN 5960-01-025-9388
NSN 5935-01-400-2816
NSN 5935-00-106-3670
NSN 5998-01-077-7671
NSN 5960-01-518-4440
NSN 4140-01-158-4139
NSN 6220-01-068-4066
NSN 6645-01-500-5611