If I had this gun would I have to get a spring with the power of 350 FPS? The reason for it is because the CQR's use the same gearboxes as the big boy ones but the cylinder is different. The different cylinder lets out more air I think because it lowers the FPS from the standard KWA spring which shoots at ~400 FPS. I need a FPS lower than 330 but higher than 290. (At 290 people can't feel it sometimes).