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 5945-01-133-7929
NSN 4140-01-268-9129
NSN 2925-00-969-8340
NSN 5990-00-051-7881
NSN 5990-00-481-7208
NSN 6650-01-619-2129
NSN 5950-01-102-7771
NSN 6220-01-353-7733
NSN 6130-01-510-9912
NSN 5960-01-609-6565
NSN 5965-01-600-5604
NSN 5910-01-269-9469