I recently acquired two .40 XD's, and much to my surprise one of them has a tendency to double tap. I also experienced an AD the other day while unloading the double tapper. I was trying to get to the bottom of what was causing my issue and it nearly ended disastrously. Thankfully I nor anyone else was injured, but this has me very concerned as I am positive my finger was nowhere near the trigger. I noticed a weld on the trigger rod (i.e. someone tried to modify it) and am not going to use this weapon until I can find replacement parts. Does anyone know if I can order factory parts for an XD? What other suggestions do you have about this issue?