The Weaver 417M model 48440 is a precision-engineered mounting solution designed to provide a custom, rock-solid fit for your shotgun. This one-piece aluminum base is machined to tight tolerances for a custom fit, offers maximum strength for rings to hold tight, and includes mounting screws. It features the rock-solid Weaver cross-lock system for a secure, slip-proof ring attachment. Specifically designed for Mossberg shotguns manufactured in 1997 and later, the base fits Mossberg 500 (1997+), 590, 535 & 835 shotguns.
Machined to incredibly tight tolerances, this one-piece aluminum base is built for maximum strength, ensuring your rings hold tight even under the heavy recoil of 12-gauge and magnum loads. With Weaver’s iconic cross-lock design, these bases ensure a secure, precise fit and are fully compatible with all Weaver top mount cross-lock rings. It features a durable matte black finish to prevent glare and resist wear in the field. The base is proudly made in the USA.
