Nordic Components MXT Black 12GA 4 Magazine tube

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