In case you always wanted to run your Ariakon ACP or ACP 2.0 pistol using a remote HPA or Co2 tank via a bottom line kit, I've just discovered that the bottom-line kit sold for the BT-17 pistol works great!
On sale now for $21.95:
The only additional bit needed is to add a 90 degree 1/8" elbow so that the braided hose will connect out the side of the 12gr chamber, and run back parallel to the barrel. No drilling required. One of the two screws that attach the ASA to the butt of the pistol is too short, but the holes line up so that's easily dealt with. If you rotate the hose right, it even still fits in the holster.
If you have one of these pistols that had to be retired because the 12gr puncture pin or its o-ring are bad, (and parts are unavailable), consider this as an option.
If I don't want to run a remote tank, I also can use a 12gr->ASA adapter to move the 12gr to the back of marker, which improved the balance noticeably. (These are around $15 on auction sites.) The braided hose also seems to have a mild expansion chamber effect on CO2.
If you have an Overlord RX, (the later one with holes in the 12gr chamber), it might be worth a shot, too. I haven't tried it, but it looks to me like the placement of the output of the dummy 12gr might line up with the 12gr chamber holes on that marker, too.
Hope this helps!