The Leupold BackCountry series comes in cross-slot and ringmount styles that accept both Picatinny and Weaver-style rings. This ringmount is specifically designed to fit a Weatherby Mark 5.Constructed with incredibly lightweight 7075-T6 aluminum and a milled in recoil lug and low-profile keeper screw, the BackCountry series is one of our lightest and most rugged hunting-style mounts yet. The Backcountry ringmount is machined with traditional styling and details, and features an integrated base and ring to fit specific rifle receivers.Nothing is more crucial than the link between your scope and firearm. Thats why our mounts are every bit as rugged and dependable as the Leupold optics they secure. And with a huge variety of mounting systems to pick from, you’re sure to find the perfect match for your firearm and style of shooting. Made in the USA and guaranteed to hold up to a lifetime of abuse, Leupold mounts will never let you down.SPECIFICATIONS Part #171124MediumMaterialAluminumBase CantNoBase Configuration2 PieceRing Height StyleMediumRing Diameter30 mmRing Height (in)1.08Weight (oz)3.1SPECIFICATIONS Part #171125HighMaterialAluminumBase CantNoRing Height StyleHighRing Diameter30 mmRing Height (in)1.1Weight (oz)3.2