I use the medium size" SmartCarry" holster for the Glock 32 pistol and S&W 640 and it works just fine. It is very comfortable and easy to access. I saw a demonstration of the .45 auto and the "SmartCarry" at a gun show last weekend and it was amazing to see that large pistol appear like magic. One nice thing about it is that there is no weight on the belt. It doesn't pull the pants down. The weight of the pistol is supported by the band around the hips. I've tried ankle,belt,shoulder,pocket,ISWB holsters, you name it, but this "SmartCarry" is the best!
Is that a pistol in your pocket or are you just glad to see me? .... Mae West