Nordic Components MXT Mossberg 12GA Extension Nut – Black

Description

If you're planning to run a Nordic Components MXT extension tube on your Mossberg, this is the piece that makes it happen. The MXT extension nut threads onto your shotgun in place of the factory magazine cap and becomes the mounting point for the extension tube kit. Without it, the tube has nothing to grab, so think of this as the foundation of the whole setup. It's machined from lightweight aluminum billet and wears a matte black anodized finish that shrugs off corrosion and stays low-key on the gun.

What the MXT Extension Nut Fits

The MB-model nut is built for the Mossberg 590/590A1, 835, 930, and 935, and it also works on the Tristar TEC-12 with a spacer between the barrel lug and nut. Worth flagging before you order: it does not fit the Mossberg 500, 535, 940 Tactical SPX, or the Maverick 88, since those use a different setup. If your gun has magazine dimples or spring retaining devices, those need to be smoothed or removed for everything to cycle right.

Pairing the Nut with Your MXT Tube Kit

Here's how the system works. The MXT extension tubes themselves are essentially universal for 12 gauge, and this nut is what actually keys the whole thing to your specific Mossberg. Buy the tube kit in whatever capacity you want, from a modest bump up to a long +9 setup, then match it with this nut and you're in business. Because the MXT system is modular, you can swap tube lengths down the road and reuse the same nut, which is handy if you decide you want more rounds later.

Built for Guns That Get Used

Nordic Components has earned a strong following among 3-gun competitors, defensive shotgun owners, and folks who put real miles on their field guns. The billet construction keeps weight down without giving up strength, and the anodized coating holds up to hard use. On tubes longer than +4, a barrel clamp is a smart addition to keep everything steady, but the nut is where it all starts.