Depending on the model of gun, typically there is some sort of setscrew either in the side or back of the gun which you can adjust to alter the amount of air entering the chamber and therefor the speed. Some guns also have regulators which can be used to adjust the pressure of the air entering the gun's valve which can change the speed of the paintball. It is best to consult your owners manual to learn the procedure for your particular gun.
On an Ion you adjust the Regulator with the proper wrench. Clockwise to increase, counter clockwise to decrease
On guns with rear adjustment (azodins) you screw the back plate in with the proper Allen key clockwise to increase and counter clockwise to decrease. This is also how you adjust the regulator.
On a Tippmann you screw the velocity screw with the proper Allen key. Clockwise to decrease, counter clockwise to increase.
The fps of a paintball gun is usually in-between 300-400
It depends on what you are comparing it with.
All paintball guns are regulated at around 290 fps, the model is irrelevant.
Almost all paintball guns will shoot 300 fps.
phosphor, paintball paradise, and orange fps
All paintball guns shoot between 280 and 300 fps.
8 bps, 300 fps.
All paintball markers are chronographed to the same velocity of around 290-300 FPS.
depends on how you adjust it, most guns come in with a factory setting at 250 fps
phosphor and paintball paradise
The only fully spring paintball gun, the splatmatic .50, shoots at 190 fps.
On the model I have,the fps screw is located towards the back of the gun under the bolt