The CARM Daystate Mags that I have for my regal are 11 round - at that time he offered a higher quality carbon plastic version that I thought he called “Pro or Competition” - that is what I bought. They are 11 rounds and extremely close to the same height as the Daystate factory mag.
The Wolverine uses the same mag - but the pin in the back is in the other location. So, just by moving the pin you can use the same mag in either Regal/Revere or Wolverine. The dual pin locations are there on both the CARM and Factory mags.