Winchester XPR RVR Standard 2 Piece Matte Finish by Leupold Leupold Standard 2-Piece Bases gives shooters maximum accessibility to the magazine of breech of their rifle and more flexibility in mounting scopes to bolt action rifles. These steel bases will fit both right and left handed action rifles. Mounting Hardware Included Features and Specifications: Finish: Matte Black Material: Steel Style: Standard Extended: No Piece: 2 Piece Elevation: None Compatible With: Winchester XPR Long Action and XPR Short Action