Carlson's(R) Magazine Extension is designed for compatible Benelli Nova and SuperNova 12 Gauge shotguns. The extension increases the shotgun's magazine tube capacity to a total of 7 shots and features durable steel construction with a black finish. It is supplied as a magazine extension system for compatible shotgun configurations.Key Features Designed for compatible Benelli Nova and SuperNova shotguns 12 Gauge compatibility Provides a 7-shot total magazine capacity Durable steel construction Black finish Magazine tube extension designCarlson's(R) manufactures firearm components and accessories with a focus on shotgun applications. The company offers precision-manufactured products designed for compatibility durability and reliable function. Carlson's products include choke tubes barrels magazine extensions and related firearm accessories.