Part Number: 1005-00-463-4616 (Barrel, machine gun)Part Number: 1005-00-608-5001 (Barrel, machine gun)Part Number: 1005-00-652-8269 (Barrel, machine gun)Part Number: 1005-00-653-5388 (Barrel, machine gun)Part Number: 1005-00-653-5482 (Barrel, machine gun)Part Number: 1005-00-714-8399 (Barrel, machine gun)Part Number: 1005-00-714-8400 (Barrel, machine gun)Part Number: 1005-00-726-5156 (Barrel, machine gun)Part Number: 1005-00-726-5787 (Barrel, machine gun)Part Number: 1005-00-726-6131 (Barrel, machine gun)Part Number: 1005-00-903-0933 (Barrel, machine gun)Part Number: 1005-00-972-0196 (Barrel, machine gun)Part Number: 1005-01-033-1527 (Barrel, machine gun)Part Number: 1005-01-044-1026 (Barrel, machine gun)Part Number: 1005-01-088-4359 (Barrel, machine gun)Part Number: 1005-01-173-0313 (Barrel, machine gun)Part Number: 1005-01-183-2963 (Barrel, machine gun)