Crimson Trace MVF-515 Vertical Foregrip with Flashlight For AR-15 Rifles and other picatinny rail equipped rifles has for years involved clamping a rather large flashlight to the rails, and attaching an activation pad to the rifle foregrip via an external wire. Enter the MVF-515 Modular Vertical Foregrip, with its compact and rugged design and our total instinctive activation system which allows the shooter to activate all combinations of light & laser sight, instinctively, while maintaining their natural shooting grip. And there are no external wires or loosely attached activation pads