Anarchy Outdoors Scope Base Ruger Precision Rifle Magnum Bubble Level 40 MOA Black MRPR-SB-WBL-40. Our sleek design is compatible with all scope rings and available in three different Minutes of Angle. When accuracy and a truly level playing field matter we've also incorporated a bubble level into the rail to help improve accuracy. At Anarchy Outdoors we pride ourselves in our ability to deliver high-quality precision and cutting-edge gear for firearm enthusiasts. All Anarchy Outdoors developed products come with a lifetime replacement guarantee. Specifications for Anarchy Outdoors Scope Base Ruger Precision Rifle Magnum: Manufacturer: Anarchy Outdoors Color: Black Fabric/Material: 6061 Aluminum Quantity: 1 Hand: Ambidextrous Gun Make: Ruger Gun Model: Ruger Precision Gun Type: Rifle Length: 8 in Width: 1 in Weight: 0.03 lb Gun Rail: Picatinny Features of Anarchy Outdoors Scope Base Ruger Precision Rifle Magnum This rail is ONLY compatible with the .300 WSM 338 Lapua and 300 PRC RPR's. Package Contents: Anarchy Outdoors Scope Base Ruger Precision Rifle Magnum Anarchy MRPR-SB-WBL-40: Scope Base for the Ruger Precision Rifle Magnum Bubble Level 40 MOA Black