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 6130-00-725-3383
NSN 5998-01-232-1410
NSN 6240-01-244-4662
NSN 5915-01-494-9550
NSN 5945-00-313-9512
NSN 5990-01-188-7309
NSN 6685-01-100-1672
NSN 5915-01-322-0945
NSN 6240-00-911-4832
NSN 5996-00-169-9036
NSN 5975-00-274-5720
NSN 6685-00-362-1649