Browning X-Bolt 2 Piece Standard Turn-In Base Silver Finish by Leupold Optics offers the Browning X-Bolt 2 Piece Standard Turn-In Base with Silver Finish. The Standard Turn-In Bases are the most versatile of any mounting system available. The rear ring is secured by windage adjustment screws which will allow the scope's internal adjustments to be used for precise sighting-in. Also and the user can add shims for rough elevation adjustment and and use the scope's elevation adjustment for bullet drop compensation and fine adjustments. Specifications and Features: Windage Adjustable Forged Steel Expert Finish Two Piece