I purchased an XD-M Elite 4.5 OSP 10mm a few years ago. I just purchased 4 more magazines from the gun store I purchased the gun. They ordered XDM full size mags (not XDM Elite) but my research is saying that they should be compatible. The issue I am having is that these new magazines do not stay in the gun. They fall out and are not locking in place. The only difference between these new mags and the ones that came with the gun are the base plate. I am looking for new base plates that match and I have tried to call Springfield. My question is 2 fold. Where can I find these base plate replacements? and why aren't these mags working when is says it should be compatible? Hopefully someone has some insight on this. Thanks in advance.