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 6645-01-432-1068
NSN 5975-01-106-3595
NSN 6105-01-121-6490
NSN 6130-01-025-6770
NSN 5975-01-602-8181
NSN 6620-01-444-4048
NSN 5985-00-205-2922
NSN 5895-00-972-7322
NSN 6145-01-399-0299
NSN 6620-00-261-5396
NSN 5895-01-479-1977
NSN 5930-00-157-4559