This is what I own: a non-restricted CX4 with 19 or so inch barrel.
By the way, Elwood uses not just stainless blanks - they are chrome/vanadium blanks, much better than the original chrome plated. I printed 10" groups with this rig at 100 yards and that considering that my particular CX4 has a small trigger problem that I will have to try to get rectified under warranty: if I pull the trigger gently, like on a target rifle, it misfires. So I had to jerk the trigger like in combat mode and still it put all bullets on paper at 100 yards. This is pretty impressive for a pistol calibre and red dot sight where red dot is size of bulls eye at that distance.