The ARCHANGEL 10/22 Picatinny rail mounts to the factory tapped holes on a Ruger 10/22 rifle receiver. It accepts both picatinny and weaver style scope rings, as well as red dot and holographic optical sights designed for picatinny rails. The mount is constructed of an aircraft grade aluminum alloy and has a black hard anodized finish.Features:- Accepts Picatinny & Weaver Rings- Aluminum Alloy Construction- Black Anodize Finish- Mounting Hardware Included