The Argus is basically a cricket. The same power plenum extension will work (Ernest Rowe), the same regulator, and it has the same valve. My regulator was faulty, and I contacted Huma-air. They sent me a free regulator for sending them the measurements. Thank you all for your imput. When I got the gun, it was shooting 18g jsb's @1040 fps. @110 bar. Probably going to try 155 bar.