Mainly, we have three types of guns on the market. They are mechanical, blowback, and electronic. Automatic guns use hammer-type things to fire a paintball. Blowback guns use almost similar technology and come with stack tubes or inline tubes. The shot offered by the blowback gun has relatively slow speed and is best for most strategic games. Electronic guns are powerful guns and use batteries. Electronic guns are a little expensive but offer you the best results in the game, especially in speedball.