STAN Onnex Clicker Thumb Heavy Metal X-Large Release - Gold - The OnneX Thumb is built off the culmination of all the thumb releases that STAN has ever made to give the best and fastest firing mechanism we have ever engineered. Working with Joel Turner of Shot IQ, we were able to create the best combination of a thumb button with the huge benefits of a click. The proven Shot IQ techniques to calm the aiming and shooting process work perfectly with the OnneX Clicker X-Large size heavy brass frame Spring loaded keeper to clip to D-Loop with jaw closed Manual release reset button Package includes 2 thumb barrel extensions, 2 thumb barrels and 3/4 finger attachment