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 6130-00-267-9970
NSN 4140-01-350-3277
NSN 5835-01-412-0344
NSN 6105-01-661-2809
NSN 6145-00-937-0976
NSN 6240-01-211-3304
NSN 4140-01-150-4895
NSN 5960-01-502-6270
NSN 5930-00-596-1694
NSN 6620-01-627-0478
NSN 4140-00-100-4563
NSN 5950-01-111-0746