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 5855-01-051-1155
NSN 6320-01-422-1212
NSN 5835-00-227-7909
NSN 6620-01-318-8314
NSN 5999-01-194-1761
NSN 5965-01-411-9933
NSN 6645-01-539-5922
NSN 6650-01-580-4321
NSN 5996-01-382-5113
NSN 2925-01-517-8544
NSN 5996-01-554-4783
NSN 5895-01-324-7036