A part, assembly, or system identified as essential to weapon system performance or operation to preserve life and safety of personnel
NSN 6135-01-045-1504
NSN 6620-00-453-8180
NSN 6650-01-594-7846
NSN 5930-01-018-3467
NSN 5975-01-037-4305
NSN 2925-01-521-0600
NSN 6650-01-275-0945
NSN 5960-01-166-4021
NSN 5996-01-399-2319
NSN 6645-01-565-0567
NSN 6145-00-233-6010
NSN 5895-00-464-7583