Sale
Fortis Manufacturing Night Rail 14.4" Free Float M-LOK Handguard - Black Finish
$215.60
Fortis Manufacturing, Inc.
Fortis Night Rail 12.9" Keymod
$223.20
$234.95
(You save
$11.75
)
The Fortis Night Rail 12.9" Keymod is a purpose-built handguard for AR-15s that combines precision engineering with lightweight performance. Built from aircraft-grade 6061-T6 aluminum, this rail delivers the kind of rugged reliability Fortis is known for while keeping unnecessary weight out of your setup. The 12.9-inch length offers a clean sight plane and ample real estate for mounting optics, lights, and other tactical gear—whether you're building a precision rifle, a patrol gun, or something in between.
What sets the Night Rail apart is its proprietary two-piece barrel nut system. Fortis engineered this from the ground up to deliver full 360-degree contact around the bore, meaning the handguard stays rock-solid under demanding conditions. The barrel nut itself is machined from 4140 steel and requires enough precision work that it rivals the labor invested in the rail itself—that level of care shows in the finished product. Installation is straightforward, and the package includes a throw-away barrel nut wrench to get you going.
The free-float design ensures your barrel vibrates independently of the handguard, supporting accuracy potential across different shooting applications. M-LOK attachment points run along the rail, giving you modular mounting flexibility without compromising the clean lines of the design. There are no visible screws on the rail system itself, keeping the profile low and the look purposeful. Everything is manufactured in the USA, backing up Fortis's commitment to quality control and support.
Key Features
- Aircraft-grade 6061-T6 aluminum construction for strength-to-weight efficiency
- Proprietary two-piece 4140 steel barrel nut with 360-degree contact for superior stability
- Free-float design for consistent barrel harmonics and accuracy
- M-LOK attachment points for modular accessory mounting
- No visible screws for a clean, integrated appearance
- Includes barrel nut wrench for installation
- Made in the USA
Specifications
| Length | 12.9 inches |
| Mounting Interface | Keymod |
| Rail Material | Aircraft Grade 6061-T6 Aluminum |
| Barrel Nut Material | 4140 Steel |
| Barrel Nut Design | Two-piece, patented, 360-degree contact |
| Attachment Points | M-LOK |
| Design Type | Free-float |
| Country of Origin | USA |
| Included Accessories | Barrel nut wrench |
Frequently Asked Questions
Is the Fortis Night Rail 12.9" Keymod compatible with my AR-15?
Yes. The Night Rail is designed for AR-15 platform rifles and uses a standard barrel nut mounting system. The Keymod interface accepts standard Keymod-pattern accessories.
What does free-float design mean, and why does it matter?
Free-float means the barrel is not in contact with the handguard, allowing it to vibrate naturally without interference. This supports more consistent bullet flight and better accuracy potential, especially at distance. The two-piece barrel nut system keeps the rail stable while the barrel remains independent.
What comes in the box?
The handguard itself and a throw-away barrel nut wrench for installation.
Can I mount optics and lights to this handguard?
Yes. The M-LOK attachment points allow you to mount any standard M-LOK-compatible accessories, including tactical lights, bipods, and other gear.
