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 5975-01-572-9358
NSN 6685-01-176-3649
NSN 5990-01-632-0969
NSN 5855-01-069-4126
NSN 5910-00-203-5373
NSN 5930-01-481-3316
NSN 6645-01-033-1171
NSN 6145-00-230-5268
NSN 5925-01-156-4426
NSN 6685-01-272-9247
NSN 5935-01-629-5498
NSN 6110-00-356-5388