Battle Arms Development - Ambidextrous Safety Selector - Short Throw (BAD-ASS-ST) is for the PROPERLY MARKED AND MACHINED "SHORT THROW" COMPATIBLE AR RECEIVERS IN SEMI AUTO. The shorter rotational distance allows for lightning fast manipulation of the safety. Perfect for competition where speed is essential. The shorter throw also allows more lever clearance and reduce lever interference to the trigger finger knuckle 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-ST is a must have for the "South Paw" and Ambidextrous Shooters!