Daniel Defense RIS II M4A1 12.25in FDE Handguard

The Daniel Defense RIS II M4A1 12.25-inch two-piece handguard is a free-floating rail system designed for AR-platform rifles. Constructed from aircraft-grade 6061-T6 aluminum and finished in Flat Dark Earth anodize, it provides a continuous upper rail and accessory mounting points while minimizing contact with the barrel. The design integrates a hardened steel barrel nut and Mil‑Spec fasteners to ensure secure attachment and repeatable alignment. The RIS II was developed to accommodate SOPMOD accessories and to allow operators to free-float the M203 mounting interface without additional tools or parts.

Key Specifications

• The overall length is 12.25 inches.
• Material is 6061-T6 aircraft-grade aluminum.
• Finish is Flat Dark Earth anodized.
• This handguard is free-floating to minimize barrel interference.
• Rail system uses Mil‑Spec 1913 Picatinny rails, including an uninterrupted top rail.
• Includes a hardened steel barrel nut for secure mounting.
• Fasteners are Grade 8 military-spec hardware.
• Weight is 17.7 ounces.
• Intended for AR-platform / M4A1 rifles.
• Country of origin is the USA.

Engineered for durability and repeatable accessory alignment, the RIS II offers a rigid mounting platform for optics, lights, and other rail-mounted equipment while keeping weight and profile efficient. Its two-piece, free-floating design and integrated barrel-nut system make it a practical upgrade for builders and experienced users who require a dependable, Mil‑Spec-compliant rail system on an AR-platform rifle.