NORDIC COMPONENTS EXTENSION TUBE 20GA +7 EXTTB207K

Nordic Components MXT extension tube for 20 gauge shotguns. - Available in variety of lengths between +4 and +7 (shell capacity measured with 2 3/4 shells and may vary with shells of differing length) - Includes ONLY MXT tube - May require purchase of new magazine spring if you are changing the capacity of your existing extension