The genesis of modular free float rails has arrived. Building off the TRX Extreme design that revolutionized rail based hand guards; the Alpha Rail utilizes a new low-profile locking mechanism, which offers unparalleled strength and stability. The Alpha Rail disperses heat and runs cooler than other close to the barrel rail systems. With a built-in legendary Troy spring loaded front Battle Sight, unlimited mounting options and greater heat dispersion, the Alpha Rail once again sets a new industry standard in modular free float rail design. Comes with three detachable rails and all mounting hardware. Troy Alpha Rail is machined from 6061-T6 hardened aircraft aluminum and finished in MIL-SPEC Type III Hard Coat Anodizing. Works with standard AR15/M16 barrel nut. Patent Pending. Made in the U.S.A. Features:- Genesis of modular free float rails- Built off the revolutionary TRX Extreme design- Utilizes low-profile locking mechanism offering unparalleled strength and stability- Disperses heat and runs cooler than other close to the barrel- Comes with three small detachable rails and all mounting hardware- Built-in spring loaded front folding M4 style Battle Sight- Machined from 6061-T6 hardened aircraft aluminum and finished in MIL-SPEC Type III Hard Coat Anodizing- Works with standard AR15/M16 barrel nut- Patent Pending- Made in the U.S.A.- Flat Dark Earth- 11".