I ended up getting it and I haven't had a single mag drop failure. Mine fits a little better, I guess!The Custom works fcu is the same as the stock black one, it’s just a different color and custom serial number. The Icarus has a notch on both sides of the grip behind the mag release, I’ve noticed it stops the button from being fully pressed from time to time so the mag won’t drop. Either way I dig it and a dremel can fix that problem.