Based off of the standard Nordic Extension Tube, the Modular eXtension Tube incorporates new features designed to eliminate common problems with shotgun magazine extensions. The MXT features a reinforced magazine tube end-cap, which prevents end-cap damage from high recoil and impact. A new clamp relief groove eliminates clamp slip during recoil, which can damage the finish of the firearm and change the point of impact. MXTs feature the same threads on either end of the tube, allowing the user to flip it, changing the location of the clamp groove. Includes spring.
Tube threads not compatible with Nordic “XX”, “XL”, and “XXL” end-caps.
Big Book Catalog, Issue:68, Page:209
SPECS: Aluminum construction, matte black finish. Tube threads not compatible with Nordic “XX”, “XL”, and “XXL” end-caps.