BT Apex Barrel System - The Apex Barrel system is redefining how the game is played. With unmatched distance along with accuracy you will be able to hit more targets than before. Features are on/off capability, hit previously untouchable targets with new curve feature, adjustable ramp switch - choose the desired level of the curve, left hook, right hook, drop shot and long flat trajectory shots with a twist of the barrel, easy to " Dial in " targets and change the level of curve, and easyt to clean.