Alfa 1.50 .50 Cal Self Defense Pepper Air Pistol Paintball Gun Marker Weapon - Tophatter's Guns'N'Weapons Store - FREE SHIPPINGShoots . 50 caliber rubber balls, pepper balls, dust balls, chalk balls, and paintballs. Powder Balls give you a more realistic training experience; Rubber Balls are great for training and practice. POWERFUL NON LETHAL DEFENSE: The Alfa 1. 50 Orange Air Gun is a reliable self defense weapon, delivering 18 Joules of power, 500 FPS and . 50 Caliber for effective deterrence. VERSATILE AND CAPABLE: The Alfa 1. 50 Orange Air Gun offers dual functionality