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 7035-01-476-7787
NSN 6645-01-493-2620
NSN 5930-01-127-8144
NSN 5855-01-642-5649
NSN 5996-01-277-5156
NSN 6145-01-544-5501
NSN 5835-00-198-4936
NSN 6645-00-674-9728
NSN 6645-01-442-6476
NSN 5998-01-416-0944
NSN 6320-01-285-1922
NSN 5965-01-550-7505