Well, I received my Maglula speed loader and it work great on all mags that I have. CZ factory and the Manicore Arms steel lip mags. 20 and/or 30 round. Make sure its the LU17B. Got mine from Optics Planet. Works great but dont over load. I suggest you don't try to over load the mags like I did. It causes the loader to appear that you broke it, but you didn't. it snaps back into place. Money well spent.
