Made from 4140 Chrome Moly steel. The handguard retainer slots and extractor clearance cut has also been done on these barrels. Gas port is not drilled on these barrels.
The picture shows the barrel as black phosphated, but they will be in the white.
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.