From what I understand, you can't get single mags with the X-tender sleeves yet. If you want one/some, you will have to buy the newer SC package deal. It comes with two standard 10 rounders and a 15 round X-tender mag with a shiny new XD SC.C1076USMC said:What I'm looking for is the 15 round 9mm mag with the XD-Xtension. Where can I get them? Also, can you get just the X-tension sleeve?