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 4140-01-026-9293
NSN 5990-01-174-6851
NSN 4140-01-151-5206
NSN 6145-00-504-5221
NSN 6240-01-424-3090
NSN 6130-01-387-5313
NSN 6145-00-256-8430
NSN 5998-01-502-7662
NSN 5915-00-450-8721
NSN 6610-01-529-8529
NSN 6320-00-218-6105
NSN 6105-00-851-7229