I've been seeing a lot of people referring to M40 and M9 holsters, but what about the M357? Is there any difference between them? I haven't been able to see another Steyr for comparison, as friends don't like the look of them (silly people). I was looking into getting a Blade-Tec UCH but there is no gun code for it, only MA1 9mm and M9/M40 w/ rail listed. Perhaps a silly question, but I don't want to buy something that is not needed.