The genesis of modular free float rails has arrived. Building off of the TRX™ Extreme design that revolutionized rail-based handguards; the Alpha Rail utilizes a new low-profile locking mechanism, which offers unparalleled strength and stability. With built-in legendary Troy spring-loaded front Battlesight, unlimited mounting options, and greater heat dispersion the Alpha Rail once again sets a new industry standard in modular free float rail design. – 11″ – Comes with three small detachable rails and all mounting hardware – Built-in spring-loaded front folding M4 style Battlesight – Machined from 6061-T6 hardened aircraft aluminum and finished in MIL-SPEC Type III Hard Coat Anodizing