Umarex Universal Trigger Lock is a simple and affordable security measure that slips into place and prevents unauthorized use of your firearm. The Trigger Lock for pistols, rifles & shotguns is a simple, affordable way for gun owners to prevent unauthorized use of their firearms. It slips into place easily and provides a formidable barrier that discourages misuse of a gun; the trigger lock is also padded to prevent damage. A second standard key also included.