Optic Height Co-witnesses with Most Suppressor Height Iron Sights. Tertiary Aiming Point Laser Engraved on Rear Face of Optic Hood.Compatible with Most Optics Ready Pistol Systems. CAUTION: Only use the included #6-32 or #4-40 screws for optic installation. NOTE: We recommend to tighten the #6-32 or #4-40 screws with torque value of about 12 inch-lb and the side plate screw with torque value of about 35 inch-lb. This item is in the category "Sporting Goods\Hunting\Scopes, Optics & Lasers\Red Dot & Laser". The seller is "palm54" and is located in this country: US. This item can be shipped to United States.