A part, assembly, or system identified as essential to weapon system performance or operation to preserve life and safety of personnel
NSN 5925-01-607-6279
NSN 5990-01-433-7886
NSN 6135-01-125-4867
NSN 6645-00-216-6126
NSN 5895-00-615-6503
NSN 6645-01-495-0939
NSN 4140-00-929-6126
NSN 5950-00-290-8090
NSN 5935-01-477-5561
NSN 2925-00-033-3052
NSN 5905-00-157-0954
NSN 5895-00-775-7278