Leupold's tradition of quality goes beyond rifle scopes. For decades, we have engineered and manufactured mounting systems in our Oregon plant that are as rugged and reliable as the Leupold scopes they secure. You can trust Leupold to give you precision mount choices that do not compromise on accuracy or reliability. These mounts are made of solid 11L17 cold rolled bar stock, using the latest computer numerical machining tools. Tight tolerances are the key to ruggedness and reliability in all Leupold Mark 4 mounts.
