An item having a rim, edge or collar for keeping it in place. it is designed specifically to be used on machine guns and the like.
Classification: Parts and accessories for military rifles of heading 9301
NSN 6135-00-503-7213
NSN 5835-01-330-6791
NSN 6110-00-679-8961
NSN 5930-01-193-6567
NSN 6150-01-359-2637
NSN 6110-01-288-0517
NSN 4140-01-557-5790
NSN 6240-01-423-8642
NSN 6645-00-942-7170
NSN 5910-00-398-0930
NSN 6110-00-862-3097
NSN 7035-01-374-0005