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 6150-01-004-2238
NSN 6110-01-010-4551
NSN 5855-00-481-0019
NSN 4140-01-074-2588
NSN 6150-00-950-6430
NSN 6610-01-148-2181
NSN 5975-00-472-7778
NSN 6150-01-364-6019
NSN 6240-01-113-2396
NSN 6645-00-616-1289
NSN 6110-01-471-3364
NSN 5920-01-484-9924