Ohuhu Iron Sights Flip Up Aluminum Alloy Front and Rear Iron Sight for Picatinny Rail Made of high-quality aluminum alloy materials, they are tough and durable. A common testimony to standard AR optics is not appropriate when flipping a low profile down. the kit includes an Allen key for easy adjustment of the front and rear sights The precision and CQB aperture standard AR front view mirror on the rear view mirror is on the front, which is more conducive to aiming These iron sights add a perfect touch to your gun. they pop up at the touch of a button! Attractions can be folded and left unaffected when not in use Simply place the sight on the rail and tighten the screw with the included Allen key. It is very easy to install