The new mags for the CZ Shadow, from the factory, are the MecGar, with a +2 baseplate on them. I run pinned full cap ones and love them far more durable than the old 18 round CZ one's I ran previously. the mag lips have a better design to them and last much much longer. The 10 round version is the same body, but with an indent to prevent the follower from going down too far. That means you can also use the larger +2 baseplate as it doesn't actually increase capacity. Totally legal for Production division too, if that's a concern.