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 5945-00-301-4830
NSN 5855-01-088-4699
NSN 5965-01-273-3055
NSN 5996-01-158-5197
NSN 6110-01-366-7954
NSN 6650-01-426-4253
NSN 5930-01-129-7193
NSN 6650-00-287-5868
NSN 6685-01-055-7384
NSN 5910-01-143-3085
NSN 6220-01-481-3827
NSN 6135-01-594-6107