I have several 870s, and one I hardly ever use. It's a 870 express 3" with black receiver, a camo Knoxx stock gen 2, camo foregrip. Only been shot about 20 times. A guy has a brand new .40 XDM that's never been shot and comes with all the accessories. Would you trade straight up for it? Anybody ever shot an XD-M before? Thanks!