An item which is an integral part of the barrel extension group of a weapon. It is designed to prevent the loss of gas pressure, by locking the barrel extension to the bolt during firing.
Classification: Parts and accessories for military rifles of heading 9301
NSN 6220-00-647-3096
NSN 5925-01-634-0664
NSN 6130-00-089-9212
NSN 5835-01-053-1236
NSN 5895-01-441-1939
NSN 5925-00-431-3256
NSN 6105-01-146-4420
NSN 5975-01-513-3455
NSN 6650-01-207-0829
NSN 6645-01-541-5696
NSN 5999-01-059-4454
NSN 5945-00-442-5460