Leupold BackCountry Cross-Slot Mount Browning X-Bolt Super SA 1-pc 20MOA Matte Black. Our BackCountry Cross-Slot Mounting System covers those and then some. With it's easy installation weaver and Picatinny compatibility and rugged durability they're guaranteed to provide you with a lifetime of performance. Specifications for Leupold BackCountry Cross-Slot Mounts: Manufacturer: Leupold Color: Black Finish: Matte Fabric/Material: 7075-T6 Aircraft-grade Aluminum Quantity: 1 Gun Type: Rifle Gun Rail: Picatinny Features of Leupold BackCountry Cross-Slot Mounts BackCountry cross-slot bases are machined from 7075-T6 aircraft-grade aluminum for lightweight rugged performance. Fits both Picatinny and Weaver-style rings. Available with zero elevation or 20-MOA for long-range shooting. Package Contents: Leupold BackCountry Cross-Slot Mounts Leupold 181332: BackCountry Cross-Slot Mount Browning X-Bolt Super SA 1-pc 20MOA Matte Black