The Troy Industries Alpha Rail (brand part number STRXAL190BT01) is a 9-inch free-float handguard for the AR-15 and M16 platforms, building on the design of Troy’s TRX Extreme rail system. Machined from aluminum and finished in black anodizing, the Alpha Rail uses a low-profile locking mechanism that delivers strength and stability without adding bulk, and it disperses heat more effectively than many close-to-the-barrel rail designs. The handguard ships with three detachable rail sections, including two 2-inch and one 4.2-inch section, along with all mounting hardware needed for installation. It’s built around a standard AR15/M16 barrel nut, though the barrel nut itself isn’t included, and it’s important to note the Alpha Rail is not compatible with Troy’s TRX barrel nut or wrench.

Key Specifications

• Measures 9 inches in overall handguard length.
• Machined from aluminum with a black anodized finish.
• Uses a low-profile locking mechanism for strength and stability without added bulk.
• Designed for improved heat dispersion compared to many close-to-the-barrel rail systems.
• Ships with three detachable rail sections — two 2-inch and one 4.2-inch section.
• Includes all mounting hardware needed for a complete installation.
• Works with a standard AR-15/M16 barrel nut (barrel nut not included).

Frequently Asked Questions

Is the barrel nut included? No, the Alpha Rail works with a standard AR-15/M16 barrel nut, but the nut itself is sold separately.

Will this work with Troy’s TRX barrel nut or wrench? No, Alpha Rails are not compatible with the TRX barrel nut or wrench.

Buy the Troy Industries Alpha Rail 9 Inch Free-Float Handguard for AR-15/M16

Upgrade your AR-15 or M16 with a stable, heat-dispersing free-float rail. Order from our Troy Industries lineup of rifle parts and our Lubbock, TX team will get it ready as soon as it’s available to ship.