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 6620-00-763-2168
NSN 4140-00-229-8467
NSN 6110-01-074-4008
NSN 7035-01-059-5114
NSN 5935-01-479-6354
NSN 5855-00-943-0685
NSN 5930-01-222-4262
NSN 5855-01-195-2518
NSN 5990-01-200-6711
NSN 6130-00-171-7400
NSN 5999-01-359-4243
NSN 5985-01-150-6571