Precision Gun Trackball Wireless Please Help A Newbie!, What Are The Characteristics That Make A Paintball Gun More Precise Than Others?

Please Help a newbie!, what are the characteristics that make a paintball gun more precise than others? - precision gun trackball wireless

I discovered the world of paintball battles, I bought my first marker, and I want a weapon with good accuracy. What should I with a marker, so I need a weapon? Spyder shutter that would be a good choice? Thank you!