10mm tubing. Aluminum, steel or copper. I did this mod myself and after much fussing with the lengths of the tube, etc. I ended up with adjustable fps from 130 - 400 fps.
Another problem: I set fps at approximately 350. When the gun is cocked (ie single action) I get 350 no problem. If I use double action, it shoots over 400 again.
Any ideas?
|