The Troy Industries Alpha Rail (brand part no. STRXAL115BT01) is a 15-inch free-float handguard machined from black anodized aluminum for AR-15/M16 platforms, built as the next generation of Troy’s TRX Extreme rail design. A low-profile locking mechanism clamps to a standard AR-15/M16 barrel nut for unmatched strength and stability, and the Alpha Rail’s open architecture disperses heat and runs cooler than rail systems that sit tight to the barrel. The set ships with three detachable rail sections, two 2-inch and one 4.2-inch, along with all mounting hardware, giving shooters flexibility to mount accessories exactly where they’re needed. Note that the Alpha Rail requires a standard AR-15/M16 barrel nut (not included) and is not compatible with Troy’s TRX barrel nut or wrench.

Key Specifications

• Machined from black anodized aluminum for a durable, corrosion-resistant handguard.
• Mounts as a free-float handguard using a low-profile locking mechanism for strength and stability.
• Runs cooler than close-to-the-barrel rail systems thanks to its open, heat-dispersing design.
• Ships with three detachable rail sections (two 2-inch, one 4.2-inch) and all mounting hardware.
• Works with a standard AR-15/M16 barrel nut, which is not included.
• Not compatible with Troy’s TRX barrel nut or wrench.
• Measures 15 inches in overall length.

Frequently Asked Questions

Is a barrel nut included? No, it works with a standard AR-15/M16 barrel nut, which must be sourced separately.

Can I use my TRX barrel nut with this rail? No, Alpha Rails are not compatible with Troy’s TRX barrel nut or wrench.

How many rail sections are included? Three detachable sections: two 2-inch and one 4.2-inch, plus all mounting hardware.

Buy the Troy Industries Alpha Rail Handguard

A cooler-running, free-float rail with modular detachable sections gives you accessory placement without the bulk of a fixed quad rail. Order the 15-inch Alpha Rail from Troy Industries through our Lubbock, Texas gun shop for fast, direct shipping, and browse more rifle parts and accessories to finish your upper.