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 5895-00-797-7364
NSN 5925-01-557-6895
NSN 5920-01-379-7475
NSN 5990-01-040-6358
NSN 6145-01-604-8619
NSN 2925-01-376-6760
NSN 5990-00-479-9157
NSN 7035-00-185-8683
NSN 6650-01-303-7964
NSN 5835-00-170-5238
NSN 6110-01-155-9446
NSN 2925-00-351-1015