Kinex Systems Duel Bridge Hunter Sight Lost XD 5 Pin .019 Lost XD. precision stackable pins precision etch markings and clear protective fiber guard that provides 100 percent fiber protection. Level included. Package Contents: Kinex Systems Duel Bridge Hunter Sight Lost XD The Duel Bridge 5 pin hunter sight features a Duel Bridge mounting bracket that is 5 long and weighs 6 oz. precision stackable pins precision etch markings and clear protective fiber guard that provides 100 percent fiber protection. Level included.