Here is Springfields response (basically the same thing Scott said earlier) to my request for a replacement barrel.
We do not sell the XD barrels separately. You may want to try Barsto, they do sell an aftermarket bbl.
Customer Service Department
420 W Main Street
Geneseo, Illinois 61254
This doesn't make any sense to me? Why not sell spare parts?
They referred me to Barsto but as I stated in my first post I don't want the tighter chamber dimensions as this may become a defensive pistol, I want a OEM barrel (guess you can't have everything you want).
Anybody have a EFK .357 tactical barrel in their .40 tactical? Does it feed RELIABLY during rapid fire?