Mark went out of his approach to hammer property the point that Colt makes use of only cast steel, and I'm able to Individually attest to The truth that the frames and slides are machined and finished from raw steel on the Colt factory in Hartford, CT. Have you come https://www.whofish.org/Default.aspx?tabid=45&modid=379&action=detail&itemid=308935&rCode=33