4140 chrome moly steel, heat treated
No other part numbers with same form, fit, and function found.
A device permanently affixed to a weapon to be used with interchangeable sights.
Classification: Parts and accessories for military rifles of heading 9301
NSN 5835-01-424-0054
NSN 5920-01-628-7074
NSN 6110-00-223-8684
NSN 4140-01-417-5404
NSN 5945-01-376-1442
NSN 5950-01-077-7536
NSN 6130-00-896-3267
NSN 4140-00-957-5285
NSN 5920-01-478-7044
NSN 6220-01-185-5545
NSN 6645-00-557-0322
NSN 5975-01-425-2510