Product DescriptionThe Nordic Components MXT +4 Magazine Extension Kit is designed to increase the capacity of compatible 12 gauge shotguns by four additional shells. Built from anodized 6061 aluminum with a black finish, this kit includes the key components needed for a reliable extension setup. For installation, it is used in conjunction with a 12 gauge extension tube nut (required and sold separately), allowing you to add capacity while maintaining dependable feeding performance.Product Highlights Adds +4 rounds of magazine capacity on compatible 12 gauge shotguns (shell length dependent). Anodized 6061 aluminum extension tube for durable, corrosion-resistant performance. Includes tube cap and full-length spring to support consistent feeding. Black finish to match common tactical and competition shotgun setups. Requires a 12 gauge extension tube nut for use (not included).Specs Brand: Nordic Components Model/Series: MXT Type: Magazine Extension Kit Gauge: 12 Gauge Capacity Increase: +4 rounds Color/Finish: Black, anodized Material: 6061 aluminum Included Components: Extension tube, tube cap, full-length spring Required for Installation: 12 gauge extension tube nut (not included) UPC: 816696021485 Manufacturer Part Number: MXT-TBS-12-4KDisclaimer: 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.