TacFire 1.1" Inch Extra High Profile 2.36" Inch Long 5 Slots 223/5.56 Flat Top Compact Riser Weaver Picatinny Rail For Red Dot Sight TacFire Official Product .Great add-on for Red Dot sight , Reflex Sight . With this Mil Spec 1.1" Extra High Riser, the full lens will just above the front sight and you will have a full view with noting blocking it . 2.37 inches long with 5 slots for weaver / picatinny style mount with 20mm wide See through design allowing you to use your iron sights Industrial grade aluminum , solid construction with black finish , light weigth : 3 OZ Two square thumb bolts with holes on it to allow Allen wrench to tighten down