They appeared to be dead-nuts on true, and I have a very good eye for visual/spacial things. I heard that SOC had a QC inspection on every one Century delivered to them in the US, before they were containerized and shipped to Iraq. All of the contractor ones I have seen or heard of on the web have been straight. They have military chrome lined barrels. Some have even had Russian"Y" in a circle proofed ones. I didn't pull the handguards at the gunshop to check, but will in 10 days when I pick it up.
Note, In my earlier post, I should have said "MANY M1Carbines were used by REMFs" not most...