Have an older AS20E that has a case hardened frame. Must have been built for Europe because it has sling swivels. English stock. Barrels are short (slightly less than 26"). My favorite barrel length is 26" so it works great for me. Don't know whether slightly less than 26" was a standard European length. Regardless, I like it. Stands out in a crowd. Congrats on your gun. Very cool.