TacFire 7/16 Inch High Low Profile 2.36" Inch Long 5 Slots Flat Top Compact Riser For Red Dot Sight TacFire Official Product .Great add-on for Red Dot sight , Reflex Sight .With this riser solidly mounts onto your flat top receiver and allows you to mount your red dot sight or reflex sight on top, via the picatinny rail using stanag rings. 7/16 inch high , 2.37 inches long with 5 slots for weaver / picatinny style mount with 20mm wide Compact Size and light weight , easier to handle than the long size risers 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