Attaching your scope to your rifle should be simple, which is why Leupold designed the Backcountry Kimber 8400 2-PC Rifle Mount to attach quickly and easily to your Kimber rifle. The Backcountry Kimber 8400 2-PC Rifle Mount is available in a matte black finish to reduce glare while you're out on the range. Material: 7075 Aluminum Scope diameters: 30mm and 1 inch Heights available: Medium and high Leupold's Backcountry Kimber 8400 2-PC Rifle Mount attaches directly to the receiver of the Kimber 8400, giving you the best possible mounting solution. Mfg: Leupold