One, i only own 4 mags, 2 16 and 2 18, and dont want to have to buy more expensive mags. Second, only 10 rounds? I thought there was a limited 10 competition for that?I kind of doubt it as my Shadow is not a loose fit.
But why do you care?
You can only load 10 +1 in IDPA anyway. Use the OEM baseplate.