Enhance your shotgun's capacity and reliability with the Wilson Combat SGET-U-2 extension tube. This robust 12-gauge extension tube improves performance while ensuring smooth operation with its extra-power magazine spring. Designed for both range use and field applications, it adds 2 rounds to your capacity, providing an essential upgrade without added bulk. Increases magazine capacity to 6 rounds Sling mount for vertical attachment, securely mounts on the bottom Includes an extra-power magazine spring for optimal feeding Features a high-visibility follower for easy monitoring of magazine status Compatible with Remington models M870, 1100, 1187 Wave washer included for enhanced stability Durable parkerized finish for corrosion resistance Equip your shotgun with the reliability and power it deserves.