The new Super Simple Mag Carrier, named because purely it's a simple functional design that is very flexible.

 This mag carrier works for right or left handed carry, the single stack version works for nearly all magazines with a tension adjustment on the side of the mag carrier. So as an example you can use the same mag carrier for say a 1911 as well as a Keltec PF9. The only change necessary is to turn the tension screw in a few turns and you're good to go.

I decided to put the mounting holes on both sides for the clip allowing both left and right handed carry as well as OWB carry and BTP carry. So you can remove the clip move it to the other side to use it for other methods of carry or the other side of the body.

Pick your magazine style out of the four options available and it'll handle most any other magazine close in size. IE Glock double stacks carriers will handle M&P mags, XD mag etc.