Leupold STD Winchester 70 WSSM 2pc Base Matte 57310 The rear ring is secured by windage adjustment screws, allowing the scope's internal adjustments to be reserved for precise sight-in. Additionally, shims can be used for gross elevation adjustment, reserving the scope's elevation adjustment for bullet drop compensation dial applications. Features: Winchester 70 WSSM Matte Finish Forged and Machined steel construction. Versatile, and available for many different rifles. Windage Adjustable (STD Mounts) Long Range STD (STD Mounts) Maximum Accessability (2 pc. Mounts) 2 Piece Bases (Mounts) STD Rings MFR # 57310 UPC: 030317573102