Another release in the partnership between PTS Syndicate and Battle Arts Development, the Ambidextrous Safety Selector Short Throw Semi Auto... "The PTS Battle Arms Development – Ambidextrous Safety Selector – Short Throw (Semi Auto) has a shorter rotational distance thus allowing for lightning fast manipulation of the safety. Instead of rotating the standard 90 degrees for single shot semi-auto, you just need to flick it half the distance to change fire control setting.