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Fortis MFG

Fortis Night Rail 556MM Free Float Rail System

Fortis Night Rail 556MM Free Float Rail System

Availability: In stock

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When designing the Night Rail™, we wanted to design a handguard that was easy to install, but also to be able to mount with a full 360 degrees of contact.  Our new patent pending two piece barrel nut is one of a kind. We developed this from the ground up and the machining time it takes to make the barrel nut, rivals the time making the actual rail. That's not to say the rail is simple to make. One look and you'll see that we really took time with this in design and development. What we ended up with is a rail that not only looks amazing, but is still true to our lightweight brand.  The barrel nut/mounting system keeps the rail performing even during the harshest conditions.

Being one of the leaders in the industry of rail innovation and design, it's always a challenge to innovate new products that function well, but look great also. We're up for the challenge with the next chapter of our product line - the Night™ Series. I think you'll agree that we hit a homerun with the Night Rail™.


  • Material: Aircraft Grade 6061-T6 Aluminum / Barrel Nut: 4140 Steel
  • Proprietary, patent pending 2 piece barrel nut that provides 360 degree contact
  • Free float rail design
  • No visible screws on the rail system
  • Will include barrel nut wrench to install
  • 1.37" Internal Diameter
  • Made in the USA!

Additional Info

Additional Info

Manufacturer Fortis MFG
Finish No
Barrel Length No
Caliber 5.56
Option No
Gas Length No
Height No
Mount No
Profile No
Reticle No
Co Witness No
Size No


Customer Reviews (3)

Bad friggin assReview by Garrett
I have the 16" version of the night rail on my 6.5 Grendel build. Looks amazing around my 20" Christensen Arms Carbon fiber barrel. Best rail on the market. Versatile, well made, and gorgeous. Ordering another for my 300 blackout pistol build (Posted on 10/3/2016)
No commentReview by Richard
Beautiful rail. Totally changed the personality of my basic AR; now it looks so badass. Can't wait to get more parts from Rainier Arms, and build-up my AR even more :D (Posted on 9/18/2016)
No commentReview by Jacob
- (Posted on 9/12/2016)

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