Well. It is truly single action, as the striker is fully cocked anytime there is a round in the chamber. The trigger pull is not bad, if you ask me. There is a generous "take up" when pulling the trigger before you feel any resistance. It's been a while since I've fired other single action hanguns, but the XD trigger seems a bit heavier than I recall my Smith 908. Probably intentional to minimize accidents due to the fact that there is no conventional "safety" that the user turns on and off with the flick of a lever.