Originally Posted by slammr
The Springfield XD and XDM are single action only. You must rack the slide (or fire round) to set/reset the trigger.
I'm sorry but, no they are not. They are striker fired like a Glock. A single action semi auto would be a 1911 or High Point.
Single action autos needs the slide to cycle completely in order to cock. A striker fired weapon such as and XD does not. You can pull the slide back 1/2-3/4" and the trigger will reset.