I haven't seen an Airsoft gun that copies an XDm. I know it probably isn't what you want to hear, but I'd get a gun that approximates the grip angle of an XDm, like a 1911 or 2011 copy if you want an airsoft gun to practice with.
Doug,
I'm open to doing this next week on Tuesday or Wednesday night at 6:30 pm. What do you think; can we come up with enough people to make it worth the while?
Sincerely,
Chuck