The Weaver Multi-Slot Base 48345 is a one-piece aluminum mount designed specifically for Remington 870 and 11-87 shotguns. Engineered to provide a secure and versatile platform, this matte black base ensures compatibility with a wide range of optics and accessories through its multi-slot, Weaver-style configuration. Lightweight aluminum construction for strength and recoil resistance Multi-slot Weaver rail for flexible optic and accessory mounting Direct fit for Remington 870 and 11-87 shotguns, includes mounting hardware Made in the USA and machined to tight tolerances, this base delivers reliable mounting strength and allows precise positioning for optimal eye relief or varied setups. It is a trusted choice for shooters seeking durability and flexibility in their optic platform.