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 5855-00-089-3974
NSN 5835-00-148-9719
NSN 6240-00-478-3858
NSN 6685-01-471-0458
NSN 5910-00-517-8366
NSN 5975-00-260-1336
NSN 5950-00-071-9288
NSN 5930-01-188-8518
NSN 6650-00-221-9425
NSN 5930-01-423-9415
NSN 5925-00-914-3636
NSN 4140-01-522-9932