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 5965-01-279-8073
NSN 6110-01-364-8880
NSN 5935-01-449-0839
NSN 6320-00-242-3300
NSN 5998-01-394-9019
NSN 6145-01-529-3572
NSN 6130-01-573-0108
NSN 5960-01-378-1729
NSN 5905-01-521-2217
NSN 5990-01-581-6871
NSN 6320-01-441-2438
NSN 6130-01-645-8890