Turn your Remington 870 shotgun into a tactical powerhouse with the Warhammer mount. Features over 20 inches of Picatinny-style top rail, as well as two 5-inch side rails; constructed of CNC machined aluminum and hard coated for durability. Attaches at the receiver pin slots and with a front barrel mount for a totally secure fit. Includes all mounting hardware and is made in the U.S.A. This mount will hold every optic and accessory you could possibly require on a tactical shotgun.