Fortis Manufacturing, Inc.121686008
Fortis Switch Rail 13.0" M-LOK Mod 1 Handguard$223.20
Availability: In Stock
The Fortis Switch Rail 13.8" M-LOK Mod 1 handguard is a lightweight, purpose-built free-float rail system for AR-platform rifles that prioritizes both functionality and ease of use. Built from aircraft-grade 6061-T6 aluminum, this handguard delivers robust performance while keeping weight down—just 9.40 ounces—so you're not dragging unnecessary pounds when it counts. The 13.8" length is engineered with a specific mission in mind: it pairs seamlessly with most direct-thread suppressors on 14.5" barrels, leaving a minimal gap and a clean aesthetic that just looks right.
What sets the Switch Mod 1 apart is Fortis's patent-pending tool-less locking mechanism, which lets you swap rails quickly without reaching for a wrench. That's a game-changer if you're running multiple setups for different missions or competitions. The rail features M-LOK sections at the 3, 6, and 9 o'clock positions plus an offset location, giving you genuine flexibility to mount lights and other accessories exactly where you want them—no need to hunt down special offset mounts or workarounds.
Installation is straightforward, thanks to a heat-treated 4140 steel barrel nut (1-7/16" x 16 T.P.I.) that ships with the handguard. The continuous top rail keeps your primary optic mount solid, while hard-coat anodizing protects against wear in the field. Whether you're building a lightweight hunting rifle, a competition gun, or a versatile duty setup, the Switch delivers a handguard that handles serious use without the bulk.
| Length | 13.8" |
| Weight | 9.40 oz |
| Material | Aircraft-grade 6061-T6 aluminum (body); 7075-T6 aluminum (locking handle) |
| Internal Diameter | 1.34" |
| Accessory Slots | M-LOK at 3, 6, 9 o'clock and offset |
| Top Rail | Continuous |
| Barrel Nut | 4140 heat-treated steel, 1-7/16" x 16 T.P.I. (included) |
| Finish | Hard-coat anodized |
The handguard ships with a heat-treated 4140 steel barrel nut (1-7/16" x 16 T.P.I.) ready to go.
Yes. The 13.8" length is specifically designed to accommodate most direct-thread suppressors on a 14.5" barrel with minimal gap—a clean, purpose-built pairing.
No. The Fortis patent-pending locking mechanism allows tool-less removal, so you can quickly change rails for different setups or missions without any wrenches.
The Switch Mod 1 features M-LOK sections at the 3, 6, and 9 o'clock positions plus an offset location, giving you multiple options to mount lights and other gear directly without adapter mounts.
SKU: 121685879 • Width: 3in • Height: 3in • Depth: 16in • Weight: 1oz
Availability: In Stock
The Fortis Switch Rail 13.8" M-LOK Mod 1 handguard is a lightweight, purpose-built free-float rail system for AR-platform rifles that prioritizes both functionality and ease of use. Built from aircraft-grade 6061-T6 aluminum, this handguard delivers robust performance while keeping weight down—just 9.40 ounces—so you're not dragging unnecessary pounds when it counts. The 13.8" length is engineered with a specific mission in mind: it pairs seamlessly with most direct-thread suppressors on 14.5" barrels, leaving a minimal gap and a clean aesthetic that just looks right.
What sets the Switch Mod 1 apart is Fortis's patent-pending tool-less locking mechanism, which lets you swap rails quickly without reaching for a wrench. That's a game-changer if you're running multiple setups for different missions or competitions. The rail features M-LOK sections at the 3, 6, and 9 o'clock positions plus an offset location, giving you genuine flexibility to mount lights and other accessories exactly where you want them—no need to hunt down special offset mounts or workarounds.
Installation is straightforward, thanks to a heat-treated 4140 steel barrel nut (1-7/16" x 16 T.P.I.) that ships with the handguard. The continuous top rail keeps your primary optic mount solid, while hard-coat anodizing protects against wear in the field. Whether you're building a lightweight hunting rifle, a competition gun, or a versatile duty setup, the Switch delivers a handguard that handles serious use without the bulk.
| Length | 13.8" |
| Weight | 9.40 oz |
| Material | Aircraft-grade 6061-T6 aluminum (body); 7075-T6 aluminum (locking handle) |
| Internal Diameter | 1.34" |
| Accessory Slots | M-LOK at 3, 6, 9 o'clock and offset |
| Top Rail | Continuous |
| Barrel Nut | 4140 heat-treated steel, 1-7/16" x 16 T.P.I. (included) |
| Finish | Hard-coat anodized |
The handguard ships with a heat-treated 4140 steel barrel nut (1-7/16" x 16 T.P.I.) ready to go.
Yes. The 13.8" length is specifically designed to accommodate most direct-thread suppressors on a 14.5" barrel with minimal gap—a clean, purpose-built pairing.
No. The Fortis patent-pending locking mechanism allows tool-less removal, so you can quickly change rails for different setups or missions without any wrenches.
The Switch Mod 1 features M-LOK sections at the 3, 6, and 9 o'clock positions plus an offset location, giving you multiple options to mount lights and other gear directly without adapter mounts.
SKU: 121685879 • Width: 3in • Height: 3in • Depth: 16in • Weight: 1oz