Pinty Green Laser Sight LED Flashlight Combo for 20mm Picatinny Rail Laser sight/LED flashlight combo, long lasting 3 Watt Luxeon LED Bulb. Produces 200 lumens on one set of batteries Increases accuracy, adjust the 650nm red laser sight for windage and elevation Use them separately or together Secure, optimal performance Fits 20mm weaver style rails, fitted with quick release mounting latch