Sissos offers a wide selection of paintballs for different uses. A quality paintball will more likely make it's mark on your opponent and not break in your marker. For blow back, semi automatic markers we recommend a paintball with a tougher, thicker shell. Tournament paint should only be used in markers capable of low pressure operation in order to avoib excessive barrel breaks. Out of all the paintballs we offer .68 cal is the most commonly used while the new and smaller sized .50 cal is steadily gaining popularity.