Mags for the EDC9 are based on the PPQ mags which in turn, are based on Beretta mags. Bill Wilson and Ken Hackathorn said this is because the mag design is one of the most reliable.
I dry fired a PDP. It's the same trigger as the PPQ but better. Crisper and more solid. That spongy, flexy feeling the triggers common with striker fired polymer pistols is gone. It's a small thing, but a leap forward in trigger feel. It's what polymer framed striker fired triggers should have been from the beginning.The Walther PDP is a pretty special blaster. Trigger is the best factory trigger I’ve ever experienced on a plastic framed, striker fired pistol. Accuracy is superb. About 1100 rounds thru it at this point, and zero malfunctions.
Best,
Will