Made from 4150 Chrome Moly steel. The handguard retainer slots and extractor clearance cut has also been done on these barrels. The gas port is also now drilled.
These barrels are made from rifle blanks with a .214" bore and 1-8 twist. Each barrel is stamped USA 5.45 for 922r compliance.
This item is made in the United States and counts as a 922r compliant part.