The LWR2 is a robust micro red dot riser that attaches to any standard Picatinny rail. Two easy to secure locking nuts retain the riser firmly in place for accurate red dot placement. Coming in at 27mm tall, this high riser mount gives you a more heads up shooting position when shouldering the rifle. For your safety, Trinity Force recommends this part be installed by a competent, qualified gunsmith/installer with an understanding of the weapon platform that the part is being installed on. Always make sure the firearm is unloaded and pointed in a safe direction when working.