The SS barrels are criterion,I know for a fact the BCM chrome lined barrels are not from criterion. I know because I asked criterion. There was discussion about green mtn/BCM chrome barrels on M4 carbine, at some point some industry experts jumped in and defended the GM barrels. I can remember people defending the Pinto, and I have friends that think Hillary was the best Secretary of State ever..
A fool and his money are soon parted...
