NEW! Tippmann's Anti-Chop Technology is a complete new system consisting of a rear bolt, front bolt and linkage arm with movements that are dictated by the location of a paintball in the chamber prior to firing. If a paintball is fed correctly, the system's front bolt and rear bolt travel together - connected by the linkage arm - to fire the ball. However, if a ball is lodged inside the chamber incorrectly, the front bolt will stop moving forward as soon as it makes the slightest contact with the lodged ball. The rear bolt continues moving forward, but is momentarily disconnected from the linkage arm until it hits the marker's air valve. Upon reaching the air valve, the rear bolt is quickly forced back as it reconnects to the linkage arm, which pulls the front bolt back into firing position. While the two bolts are traveling back together, the lodged ball falls into position and the marker then cycles itself to discharge the ball at normal velocity.