I finally had a chance to fire the 1927 Sistema .45 that I got from JLD Enterprices today. I was in the process of loading the mags that I use for my Ballester Molina (3 original, and 2 OEM) but before I loaded each one I inserted it into the well to make sure of the fit. The mag that came for the Sistema inserted and ejected w/o any problem. For all the other mags I had to press the mag release in order to insert them. One Ballester Molina and one OEM mag were really tight when inserted so after ejection I just put them aside. I could not see any difference in the size of any of them and the slots seemed to line up. I did not have any trouble with the four that I used at the range and fired about 100 rounds through the pistol (the wife was with me today with her 21A & even she was impressed how well I did with the Sistema ) Has any one else noticed this tight mag situation or it is just me?