GG&G MOSSBERG 940 PRO TACTICAL REPLACEMENT MAG TUBE EXTENSION NUT, ACCESSORY CAPABLE

What the heck is the GG&G Mossberg 940 PRO Tactical Replacement Accessory Capable Extension Nut and why do I need it?

Here's what it is and why it is. Because of the Mossberg 940 PRO Tactical forearm design and the relationship between it and the magazine tube extension nut, the standard method of front accessory mounting is not possible with the factory set up.

GG&G and our customers appreciate the Mossberg 940 PRO shotgun and its features. However, it appears that Mossberg thought about the problem and offered an easy but incomplete and questionable solution.......A Plastic Barrel Clamp that accommodates M-LOK accessories. Our team of professional experienced shooters and advisers see at least two problems. One is the Plastic Barrel Clamp, it may not fail right away, but after multiple heat cycles and attempting to keep it tight on the barrel it will, in our humble opinion, lead to a failure. Number two is the M-LOK slot position being at the top of the barrel clamp. There is a reason that the majority of barrel clamp manufacturers, including GG&G, mount the sling or light mounts, whether they be an M-LOK configuration, or a more traditional screw attachment method, at the most stable position and most ergonomic position, the center point of the barrel clamp. As you pull on the sling, you are pulling the top non-anchored area away from the barrel. Occasionally it's a hot barrel - a very hot barrel, which tends to make plastic, even thermoplastics, more flexible and subject to degradation, bending and movement. 

The GG&G Team came up with a very unique solution that works with multiple different accessories. Yes, you need the GG&G Replacement Accessory Capable Mag Tube Extension Nut in order to mount the front accessories. Yea, it is not an inexpensive solution, but it is manufactured from steel! Solid, Rugged And Dependable!