http://www.gunsandammomag.com/techside/crown_120804/ little long to copy and put int quote box. http://www.border-barrels.com/articles/bmart.htm got a bullet stuck in a m40 and a S&W 40ve. the 40ve has a stainless barrel. the steyr barrel was easier to clean after getting the bullet pushed out. had to use a 12 ton shop press to remove the bullet. hammer and dowel didnt work. cant remember what company it was that does 1911 parts but had a picture of a barrel being made and they were using one huge ass piece of stock metal. now I know why. just by coincidence and after talking with other members I took a dusty storm lake 1911 barrel and check how the outer diameter of the rifled area matched up to M40 slide and barrel. the outer diameter is a very close fit for the port but the chamber section of the 1911 barrel is too wide and well round. sure a 45acp steyr may be done. sigh :cry: while S&W is nice M&P just doesnt do anything for me.