Fits 12 Ga Mossberg 500/590/835 shotguns that have been drilled and tapped at the factory or by a gunsmith to accept a top scope mount. Mount bolts into these holes with included mounting screws. This rail provides a 5.5″ Picatinny/Weaver style tactical rail for mounting scopes, sights or other tactical accessories.
Hard coat anodized finish and only weighs 2oz.
Will accept most 7/8″ weaver accessories.