Product DescriptionAdd firepower to your favorite Benelli shotgun with the Carlsons Magazine Extension Tube Kit. Built from durable blued solid steel, this threaded extension replaces your factory magazine cap and provides additional magazine capacity for demanding use. The kit includes a magazine spring, a base clamp with swivel stud (quick detachable swivel not included), and a high-visibility follower (note: some extensions require the factory follower and will not include one). Ideal for home protection, competition shooting, and law enforcement applications.Product Highlights Blued solid steel magazine extension tube designed for rugged, reliable performance Threaded tube replaces the factory magazine cap to increase shotgun magazine capacity Includes spring and base clamp with swivel stud (QD swivel not included) High-visibility follower included (some models may require factory follower) Compatible fitment for Benelli M1, M2, and Super Black Eagle I/II/III shotgunsSpecs Brand: Carlsons Manufacturer Part Number: 04518 UPC: 723189045180 Gauge: 12 Gauge Compatible Models: Benelli M1, Benelli M2, Benelli Super Black Eagle I, II, III Finish/Color: Blued (Black) Material: Blued steel Capacity: 10 rounds total (commonly listed as 9+1 with 2-3/4" shells; longer shells may reduce capacity) Overall Length (extension): 14.25 in Included Components: Extension tube, magazine spring, base clamp with swivel stud, high-visibility follower (model-dependent) Country of Origin: USA Weight: 0.9 lbDisclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product's manufacturer.