Fortis REV II 13.8" M-LOK Free Float Rail
Not Yet Rated | Write the First Review SKU: 222-FOR-REV-II-14-MLOK
UPC: 855476000000
MFG#: REV-II-14-MLOK

The Fortis REV™ II 13.8" M-LOK Free Float Rail (Black) brings next-level performance to the AR-15 platform. Engineered for shooters who demand the perfect balance of strength, weight, and sleek design, this rail system redefines what a modular handguard should be.

Crafted from a single piece of aircraft-grade aluminum, the REV II is ultra-lightweight yet incredibly rigid, providing the stability you need for precision shooting and the agility required in the field. Whether you’re upgrading your duty rifle, competition setup, or tactical build, the Fortis REV II delivers rock-solid performance without compromise.

Key Features of the Fortis REV™ II 13.8" M-LOK Rail (Black)

• Ultra-Lightweight One-Piece Design: Precision-machined 6061-T6 aluminum body that’s both strong and minimal.

• True M-LOK Compatibility: Mount accessories directly at the 3, 6, and 9 o’clock positions for streamlined modularity.

• Standard AR-15 Barrel Nut Mounting: Easy installation using a standard nut — no proprietary tools required.

• Slim Ergonomic Profile: Fits comfortably in hand, improving control and reducing fatigue during extended sessions.

• Durable Type III Hardcoat Anodized Finish: Matte black finish that resists corrosion and wear.

• Optimized Length for Versatility: The 13.8” length offers ideal coverage for mid-length gas systems while maintaining a lightweight footprint.

• Full-Length Picatinny Top Rail: Secure mounting for optics, backup sights, and tactical accessories.

Why Choose the Fortis REV™ II for Your AR-15 Build

When we designed the Fortis REV II, we didn’t aim to make just another rail — we set out to create a better one. Every curve and cut was engineered to reduce weight while maintaining rigidity and alignment.

Unlike other handguards that require proprietary tools or bulky barrel nuts, the REV II installs easily with your existing hardware. Its sleek black anodized finish complements any rifle build, offering both tactical appeal and long-lasting durability.

Whether you’re chasing tighter shot groups, building a lightweight competition rifle, or upgrading for pure aesthetic performance, the REV II 13.8" M-LOK rail will deliver beyond expectation.

“Fit and finish are flawless. It’s light, locks up solid, and looks incredible. One of the best upgrades I’ve made.” — Verified Owner

Fortis REV™ II vs. Other 13”–14” Rails

The Fortis REV II leads in weight efficiency, installation simplicity, and price-to-performance ratio — all while maintaining a clean, minimalist profile trusted by professionals.

Technical Specifications

• Length: 13.8 inches

• Weight: Approx. 8.1 oz (without nut)

• Material: 6061-T6 Aluminum

• Finish: Type III Hardcoat Anodized (Matte Black)

• Attachment System: M-LOK

• Platform: AR-15 / M4 / M16

• Mounting Method: Standard Barrel Nut

Installation and Compatibility

The Fortis REV II 13.8” M-LOK rail is compatible with all standard AR-15 upper receivers and utilizes a standard barrel nut, eliminating the need for custom tools or complex mounts. The design offers enough internal clearance for most Adams Arms and similar micro piston systems while maintaining a low-profile fit.

Its length makes it perfect for mid-length gas systems, offering excellent barrel coverage and balance.

Customer Feedback

⭐⭐⭐⭐⭐
“Lightweight, easy to install, and looks amazing on my build. The fit is perfect and finish quality is second to none.”

⭐⭐⭐⭐⭐
“I replaced my BCM with this Fortis rail. Lighter, easier to mount, and feels better balanced. Highly recommend.”

Frequently Asked Questions (FAQ)

Q: Will the Fortis REV II fit my AR-15?
A: Yes, it fits any standard AR-15 upper and mounts directly to a standard barrel nut — no proprietary parts required.

Q: Is this rail compatible with piston systems?
A: Yes, it has internal clearance for most piston-driven setups, including Adams Arms micro systems.

Q: How much does the 13.8” model weigh?
A: Approximately 8.1 ounces, making it one of the lightest full-length free float rails in its category.

Q: What finish is used on the black version?
A: Type III hardcoat anodized matte black for superior corrosion and wear resistance.

Q: What length gas system is best suited for the 13.8” rail?
A: The 13.8” model is ideal for mid-length gas systems but can also fit custom builds.

Upgrade Your AR-15 with the Fortis REV™ II 13.8" M-LOK Rail

Every ounce matters, and every detail counts. The Fortis REV II 13.8" M-LOK Free Float Rail (Black) gives your rifle the precision, balance, and lightweight strength it deserves.