Leupold Backcountry Cross-Slot Scope Base Features The Leupold Backcountry Cross-Slot Scope Base is machined from aluminum and finished in a durable matte black coating that resists glare and blends with most factory rifle finishes. Its one piece design spans the Weatherby 307 short action receiver providing a rigid mounting platform that resists shifting under recoil better than a two piece base setup. Built-in 20 MOA of elevation moves the scope s adjustment range forward giving long range shooters extra elevation travel to reach distant targets without running out of internal scope adjustment. At 6.3 inches long and only 0.25 inches tall the base adds minimal bulk between the receiver and the optic. Weighing just 1.85 ounces the Backcountry Cross-Slot Base keeps the overall rifle weight low an important consideration for hunters carrying their rifle over long distances. Its cross-slot design accepts Weaver-style rings giving the shooter flexibility in choosing a ring height and width to match their scope s objective diameter. Designed specifically to fit the Weatherby 307 short action the base lines up with factory screw holes for a straightforward drill-free installation. For Weatherby 307 owners looking to mount glass with maximum elevation headroom the Leupold Backcountry Cross-Slot Scope Base is a purpose-built solution. Leupold Backcountry Cross-Slot Scope Base Specifications Manufacturer: Leupold Model: Backcountry Cross-Slot Base Compatible Hosts: Weatherby 307 Short Action Color: Matte Black Material: Aluminum Length: 6.3 Height: 0.25 MOA: 20 Pieces: 1 Weight: 1.85 oz Type of Rings Needed: Weaver Style Available At: GrabAGun