Okay so I got my Taurus millenium pro PT140 back from Taurus. They replaced the front sight and recrowned the barrel. So now I go to buy a new magazine for it. I have two factory mags that came with the pistol when I purchased it but I wanted at least one more. Man those things are expensive! Anyway I ordered one for thirty some bucks. I get and it's brand new in the Taurus factory packaging. Great except that it will not work. That is I can't even get it to lock into the gun. It fits into the mag well just fine but it will not lock in. I've compared it to my other mags and it looks almost the same except that the slot on the right hand side is a little larger than my originals. My question is what is the difference between a Taurus PT140 Millenium Pro and a Taurus PT140 or Pro series? Are there any differences in the magazines? Could this, in other words, be the problem? Thirty three bucks and change is too much to pay for a paper weight if you know what I'm saying.