MPN: NTR-10-KM / NTR-12-KM / NTR-14-KM / NTR-16-KM


  • 2-piece barrel nut that provides 360-degree contact
  • Free float rail design
  • KeyMod attachment points
  • No visible screws on the rail system
  • Barrel nut and mounting hardware included

*This Fortis NIGHT Rail is the KeyMod Model, if you need the M-LOK model, please check out the Fortis NIGHT Free Float M-LOK Rail System.


  • Material:
    • Rail: Aircraft Grade 6061-T6 Aluminum
    • Barrel Nut: 4140 Steel
  • Finish: Mil-Spec Type III Hard Coat Anodized
  • Height: 2.35"
  • Width: 2.25"
  • Internal Diameter: 1.35"
  • Weight (with barrel nut):
    • 10-Inch: 12.2 oz.
    • 12-Inch: 12.9 oz.
    • 14-Inch: 13.9 oz.
    • 16-Inch: 14.6 oz.
  • Actual Length:
    • 10-Inch: 10.5"
    • 12-Inch: 12.875"
    • 14-Inch: 14.437"
    • 16-Inch: 16"


  • Mil-Spec AR-15 upper receivers


  • 1x Fortis NIGHT Free Float KeyMod Rail System
  • 1x Two-Piece Barrel Nut
  • 1x One-Time Use Barrel Nut Wrench
  • 2x Installation Pins
  • 1x Locking Insert
  • 1x Locking Insert Retaining Screw


When your next AR 15 build requires a lightweight handguard that functions as a KeyMod Rail, choose an American made Fortis NIGHT Rail. Fortis Manufacturing’s obsession with innovation delivers sleek looking, cutting edge products that you can count on even in challenging conditions. Whether you need a 12, 14 or 16-inch handguard, The Fortis NIGHT Rail is available to fit your rifle.

The Fortis NIGHT Rail extends your top rail mountable surface it’s full 12-inch, 14-inch, or 16-inch length, and also gives you ample KeyMod Rail mounting options for accessories you may want to change without heading to the bench every time. The NIGHT Rail handguard is constructed of aircraft grade aluminum for superior performance in a lightweight form factor. Fortis delivers the complete package; a flawless look, superior protection and the mounting options you want.

Nothing was left to chance when Fortis MFG produced the KeyMod Rail version of their NIGHT Rail handguard. In addition to their one of a kind two-piece barrel nut and the rail itself, each Fortis NIGHT Rail is supplied with the tools you need to complete your installation according to their specific instructions. Fortis’ exclusive barrel nut wrench fits onto your torque wrench for timing and your breaker bar for final tightening. After properly mounting the assembly to the barrel and applying the handguard, you will use the included pins to tighten the forward part of the barrel nut assembly securely with nothing more than your own two hands. No extra extensions, nothing complicated a secure installation with no fuss.

Despite the simplicity of the assembly process, Fortis MFG’s unique barrel nut system ensures an unshakable 360-degree fit that is secure all the way around and free-floats properly, even when subjected to real-world conditions. To some it might seem odd that it takes just as long to machine the barrel nut assembly as it does the complete Fortis NIGHT Rail, but when you want superior performance you put the time in to make a superior product.

Wing Tactical does the Legwork for You

With so many new parts and accessories coming to the small arms market each year it’s almost impossible for you to keep up with all of what’s available. Everyone wants the best parts they can budget for every build or upgrade, but how can you be sure you’ve got the best you can buy. The easy way to make sure you’re getting the most bang for your buck is to buy from Wing Tactical.

Whether you need a quality handguard, grip, or muzzle device, the crew here at Wing Tactical has already thinned out the herd, so you know that whether you choose a Fortis Rail or a custom muzzle brake, you’re going to get a quality product that performs just as it should.

Quality Parts from Companies You Can Get Behind

When you choose parts like this Fortis Rail from the Wing Tactical catalog you’re getting the best value money can buy, and there’s something more. The products we offer are from companies we’re proud to partner with. Many of them are veteran owned companies just like Wing Tactical. We all believe in the work we do and we don’t cut corners.

The vast majority of products we offer are designed and manufactured in the United States by American craftsmen. We don’t stock inferior junk just to push profits. We are shooters and armorers just like you. We know which parts you need to complete your build or upgrade your stock rifle to the perfect customized weapon for you. Don’t hesitate to contact us if you have any question, we’re here to help.

Have a question?

Ask an Expert