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 6135-01-086-8167
NSN 2925-01-115-8072
NSN 5910-01-215-2960
NSN 6220-01-578-6554
NSN 5996-01-259-3982
NSN 6650-01-229-6288
NSN 5905-00-584-5009
NSN 6145-01-429-8529
NSN 5990-00-617-1422
NSN 5990-00-316-8872
NSN 5990-00-932-3070
NSN 4140-01-222-7552