Enhance your Mossberg shotgun's functionality with the Presma Aftermarket Picatinny Top Rail, designed specifically for models 500, 930, 935, and 940. This robust rail provides a solid foundation for mounting various accessories, ensuring superior performance. Constructed from high-strength materials, the Presma top rail maintains optimal durability while allowing for precise alignment and stability. It transforms your shotgun into a versatile platform suited for any tactical scenario. Lightweight yet sturdy construction Easy installation with included hardware Compatible with multiple accessories Low-profile design for sleek aesthetics Maximize your shotgun's potential with the advanced design and reliability of the Presma Picatinny Top Rail.