The Fortis Night M-LOK Rail System represents a perfect balance of strength, precision, and lightweight design. Crafted for AR-15 builders who demand excellence, this free float handguard enhances accuracy, improves control, and elevates the overall performance of your rifle.

Each Fortis handguard is meticulously machined from 6061-T6 aluminum, then finished with a Type III hardcoat anodizing for maximum durability and corrosion resistance. The patent-pending two-piece barrel nut system creates 360° of contact, ensuring an exceptionally rigid fit that keeps your optics aligned and your zero locked in — no matter how demanding the conditions.

Whether you’re building a precision rifle, an SBR, or a competition setup, the Fortis Night Series delivers elite-level reliability and refined aesthetics in one complete package.

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Why Choose the Fortis Night Series

The Fortis Night Series isn’t just another rail system — it’s an evolution in AR-15 handguard engineering.

By combining an innovative barrel nut design with Fortis’ precision machining, this rail installs easily while maintaining rock-solid alignment. The slim, ergonomic profile gives shooters exceptional handling and comfort, while the M-LOK platform allows for modular accessory mounting anywhere along the rail.

From range sessions to tactical use, the Fortis Night line offers one of the most rigid and dependable mounting systems available today.

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Key Features

• True Free Float System: Keeps your barrel free from stress for enhanced precision and consistency.

• 6061-T6 Aluminum Construction: Strong, lightweight, and built to withstand hard use.

• M-LOK Mounting Compatibility: Attach grips, lights, and accessories exactly where you need them.

• Patent-Pending Barrel Nut System: Full 360° contact ensures unmatched rigidity and easy installation.

• Type III Hardcoat Anodized Finish: Matte black finish designed for long-term durability.

• Available in Multiple Lengths: 10.5”, 12”, 14”, and 16” to fit your build needs.

• Made in the USA: Precision-engineered and proudly manufactured domestically.

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Installation Made Simple

Installing the Fortis Night M-LOK rail is straightforward and frustration-free.
The unique two-piece barrel nut design eliminates the need for proprietary tools and guarantees even tension along the barrel interface. Simply torque, align, and lock — you’ll have a perfectly secured rail system in minutes.

Each Fortis rail includes the mounting hardware and instructions you need to achieve a professional-grade installation. Compatible with all standard AR-15 mil-spec 5.56 uppers, it’s ready to upgrade your build right out of the box.

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Fortis Night™ Model Options

• 10.5” M-LOK Free Float Rail: Ideal for compact AR builds and pistol-length setups.

• 12” M-LOK Rail System: Excellent for mid-length gas systems with optimal handguard coverage.

• 14” M-LOK Rail: Perfect balance between reach and weight.

• 16” M-LOK Rail: Full-length rail for precision builds and rifle-length gas systems.

Each version delivers the same precision-machined strength and aesthetic detail Fortis is known for.

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Frequently Asked Questions (FAQ)

Q: Will the Fortis Night Rail fit my AR-15 upper?
A: Yes. The Fortis Night M-LOK Rail fits all standard AR-15 mil-spec 5.56 upper receivers.

Q: Which gas system should I use with each model?
A: The 10.5” rail fits carbine or pistol-length setups, the 12” and 14” models pair perfectly with mid-length systems, and the 16” model is ideal for rifle-length builds.

Q: How is the Night Series different from the Fortis REV II?
A: The Night Series uses a proprietary two-piece barrel nut for superior rigidity, while the REV II is focused on ultra-lightweight design and simplicity.

Q: Does the rail come with mounting hardware?
A: Yes. Each rail includes a two-piece barrel nut, screws, and installation hardware.

Q: Are Fortis rails made in the USA?
A: Absolutely. Every Fortis handguard is proudly designed, machined, and finished in the United States.

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Upgrade Your Rifle with Fortis Quality

The Fortis Night™ M-LOK Free Float Rail System sets the standard for premium AR-15 performance.
Lightweight yet durable, easy to install yet remarkably secure — it’s built to outlast and outperform.

If you’re looking for a rail that balances innovation, precision, and reliability, the Night Series is your answer.
👉 Order yours today from Mounts Plus and experience why Fortis remains one of the most trusted names in firearm components.

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