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Showing results for tags 'Version 2 gearbox'.
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When I first got my KWA CQBR mod 1, it was shooting around 350 fps. I recently put the following upgrades in my gun trying to get better fps, range and accuracy. A m140 spring, a high torque motor, a new piston and piston head, and an angel custom 6.01 inner barrel. After installation my fps was about 230. So then I installed a type 0 cylinder and just because I was crunched for time I put in the old weaker spring. Now my chrono reads about 18 fps. The bb is literally rolling out of the barrel with a fully charged battery. Before I installed the cylinder I checked the air seal with the piston and it seemed to be fine. I really have no idea what the issue is. Any advise would be very appreciated.