A part, assembly, or system identified as essential to weapon system performance or operation to preserve life and safety of personnel
NSN 6645-01-062-0905
NSN 5990-00-613-2279
NSN 5945-01-464-4231
NSN 2925-00-540-9918
NSN 5975-00-113-7312
NSN 5999-01-442-1526
NSN 5965-00-208-4896
NSN 5996-01-212-7174
NSN 5990-00-200-5232
NSN 6240-01-303-6174
NSN 4140-01-488-5980
NSN 6135-01-190-2628