Daniel Defense RIS II M4A1 Assembly FDE – Free-Float Rail System

The Daniel Defense RIS II M4A1 Assembly is a military-spec free-float rail system designed to the exact specifications used by USSOCOM. This quad-rail handguard provides a rigid, stable mounting platform for lights, lasers, vertical grips, and other accessories across four MIL-STD-1913 Picatinny rail surfaces. The free-float design eliminates contact with the barrel, improving accuracy potential by preventing external pressure on the barrel during shooting. Finished in Flat Dark Earth to match FDE receivers and furniture.

This complete assembly includes the rail, barrel nut, and all necessary mounting hardware for installation on AR-15/M4 platform rifles with carbine-length gas systems. CNC-machined from 6061-T6 aluminum with a hard-coat anodized finish for durability and corrosion resistance. The RIS II features integrated quick-detach sling swivel sockets and Daniel Defense's bolt-up system for a secure, repeatable installation.

• Type: Free-Float Quad Rail Handguard
• Compatible Firearms: AR-15/M4 Carbine-Length Gas Systems
• Material: 6061-T6 Aluminum, Hard-Coat Anodized
• Finish: Flat Dark Earth (FDE)
• Rail Standard: MIL-STD-1913 Picatinny (4 Sides)
• Includes: Rail Assembly, Barrel Nut, Mounting Hardware
• Use: Accessory Mounting, Barrel Accuracy Enhancement