The Backcountry Winchester XPR 2-PC Rifle Mount makes right ring-and-base setup for your rifle as easy as possible. Leupold's Backcountry Winchester XPR 2-PC Rifle Mount attaches directly to the receiver of the Winchester XPR. Material: 7075 aluminum Color: Matte black Scope diameters: 30mm and 1 inch Mount models available for both short- and long-action rifles The Backcountry Winchester XPR 2-PC Rifle Mount is durable and secure, two important factors when it comes to mounting your scope to your rifle. Mfg: Leupold