Nordic Components MXT magazine extension tube.
- MXT extension tube for changing magazine extension length and capacity
- Available in variety of lengths, from +1 to +9 (shell capacity measured with 2 3/4″ shells and may vary with shells of differing length)
- Features relief groove to eliminate barrel clamp travel and ensure repeatable placement after disassembly (+2 through +9 only)
- Relief groove is not centered and can be relocated by reversing the tube (thread pitch the same on both ends)
- Includes ONLY MXT tube, a compatible MXT NUT is required
May require purchase of new magazine spring if you are changing the capacity of your existing extension