Nordic Components MXT magazine extension tube. MXT extension tube for changing magazine extension length and capacity Available in variety of lengths between +2 and +9 (shell capacity measured with 2 3/4a ^2 shells and may vary with shells of differing length) Features relief groove to eliminate barrel clamp travel and ensure repeatable placement after disassembly Relief groove is not centered and can be relocated by reversing the tube (thread pitch the same on both ends) Includes ONLY MXT tube May require purchase of new magazine spring if you are changing the capacity of your existing extension Click this link to find the attachment nu Mfg: Nordic Components SPECS: +1, +2, +3, +3B (for flush fit on 18.5a ^2 barreled Benelli M1, M2), +4, +5, +5B (for flush fit on 21a ^2 barreled Benelli M1, M2), +6, +7, +7B (for flush fit on 26a ^2 barreled Benelli M1, M2), +8, +8B (for flush fit on 28a ^2 barreled Benelli M1, M2), +9.
