Rise Armament Super Sporting Trigger, Flat, Fits AR15, 3.5 LB Pull, Ambidextrous Safety, Matte Finish, Black T017F-6423-BLK The RISE Armament Rave 140 is the gen 2 of the best-selling RA-140 Super Sporting Trigger (SST). The trigger is available in a curved or flat version and includes anti-walk pins. With its innovative" patent-pending design" the RISE Ambidextrous Safety Selector will enhance the functionality and reliability of your AR-15" AR-10" or AR9. Chasing after a safety detent or spring is a thing of the past as those small parts are self-contained inside the RISE Ambi Safety Selector.