Troy Semi Auto Direct Thread Ambi Safety Selector AssemblyThe Troy Ambidextrous Safety Selector allows operation from either side of the lower receiver. Both levers have been designed similar to a standard lever for positive operation. Allows operation from either side of the lower receiver Both levers designed similar to a standard lever for positive operation Ambidextrous design Warning: This product may contain chemicals known to the State of California to cause Cancer or Reproductive Harm. For more