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 5855-00-014-5008
NSN 5998-01-415-3068
NSN 5996-01-069-2915
NSN 5855-00-337-3679
NSN 6240-00-627-9007
NSN 5915-01-463-8413
NSN 5915-01-468-5518
NSN 7035-01-029-7221
NSN 6320-01-476-7702
NSN 6620-01-060-6418
NSN 5965-01-574-4938
NSN 6220-01-476-4450