The Leupold 50012 2-Piece Standard Base for Browning and Winchester 1885 High Wall is designed to securely mount your riflescope to Browning and Winchester 1885 High Wall rifles, and features a forged and machined steel construction for long-lasting durability. Long Range STD™ technology provides a 15-MOA slope of built-in elevation compensating for bullet drop at extreme ranges, while the rear ring is secured by windage adjustment screws.