where are they. A couple years ago they were all over now I cant find anything but one 45 acp. I really like a 40sw to run suppressed. I thought of the mec tec conversion for one of my glocks but they don't come threaded and I hate to tie up a handgun and if a guy buys a glock and a mec tec hes into more money then if he just bought an ar. I know stag, Olympic arms and cmmg made them.