Are there any 1911's that are not made for .45? Just wondering if they make them in 9mm or .380 or something like that. I do know there are some built for .357 Magnum and can also take .38 Special. I see they make .22 rimfire conversion kits also. Just wondering if any manufacturer makes them in 9mm or .40 S&W and what are the pros and cons of a non-.45 1911? Thanks.