Battle Arms Development - Ambidextrous Safety Selector (BAD-ASS) for the AR15 Style Rifles and the ArmaLite, Inc.'s AR10® (Semi Auto). The Levers are detachable and interchangeable on both sides for maximum flexibility and user preference. There are a total of (9) Lever Designs and (81) Possible Lever Combinations! The BAD-ASS is a must have for the "South Paw" and Ambidextrous Shooters!