Thats how this guy did it. The dummy 12 gram hole doesn't line up under the gun though so you have to do it the way he did it. Also the new dummy 12 grams don't require a penny for it to fit in your gun. I did something similar to this guy except my hose runs along the side of the gun and not under it and its on a remote so it still gives you that pistol feel. I'll post pictures soon so don't buy anything yet. In case you like my idea better. I wasted some money before I got it right so I don't want you to make the same mistakes I did.