This professional grade, LIGHTWEIGHT semi-auto safety selector is the perfect upgrade to your AR-15. The CNC machined, billet 7075-T6 aluminum skeletonized levers are strong and lightweight. It comes standard with a precision SWISS CNC machined, reversible throw steel safety center core with 0°-90° and 0°-60° short-throw options. The standard and short aluminum safety levers are fully interchangeable and modular to accommodate left or right handed shooters.The new BAD-ASS-LITE is now 100% compatible with all known, AR variant lower receivers and triggers designed to work with the “Mil-Spec” AR-15 semi-auto safety. No longer do you need a short-throw relief cut on your lower receiver to use the ambidextrous safety, simply use the provided short-throw markings sticker! No longer do you have to choose which trigger is compatible with the safety! If the trigger it will work with a “Mil-Spec” AR-15 semi-auto safety, it will work with the new BAD-ASS-LITE!