Carlson's 12GA Mag Extension Blued for Benelli M1/M2/SBE is the ideal upgrade for boosting the performance of your shotgun. Made from solid blued steel this extension increases your magazine capacity to 10 rounds and is a perfect choice for home protection competition shooting and law enforcement applications. It features a high-visibility follower and comes complete with a spring base clamp with swivel stud for quick detachable swivel compatibility (not included). Its threaded tube design easily replaces your magazine cap providing a seamless addition of extra rounds for enhanced functionality. Reliable durable and designed for Benelli M1 M2 and SBE series shotguns this accessory ensures versatile and dependable performance.