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 5990-00-191-6290
NSN 5920-00-269-6178
NSN 6240-01-544-9579
NSN 5930-01-452-4183
NSN 5975-00-189-7849
NSN 5990-01-131-2008
NSN 6620-00-170-5296
NSN 5930-01-585-2184
NSN 5835-01-111-0969
NSN 6320-01-476-7702
NSN 6150-00-531-6440
NSN 6220-01-381-1793