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 5855-00-560-0110
NSN 5960-01-505-2426
NSN 5910-01-004-0407
NSN 5920-01-032-6471
NSN 5965-00-034-4249
NSN 5910-00-185-5742
NSN 5835-00-931-5568
NSN 5855-00-821-7512
NSN 5996-01-144-4691
NSN 6135-00-880-1026
NSN 6620-00-383-8740
NSN 5855-01-424-1090