Ar-15 Rail Interface System Ii - Mk18 Ris Ii Handguard 9.55'''' For M4a1 Black

The Daniel Defense Rail Interface System (RIS II) was designed at the request of the United States Special Operations Command (SOCOM) for the SOPMOD II program. SOCOM had a specific requirement for a free float M203 solution and Daniel Defense responded" designing a revolutionary product to meet the government's need. The Daniel Defense RIS II allows the individual operator to free float the M203 grenade launcher without additional parts. Additional features include: Aircraft Grade 6061-T6 Aluminum construction" Free-Floating Barrel Design For Increased Accuracy" Battle-Tested" 6-Bolt Bolt-Up System Securely Attaches Handguard to the Upper Receiver" Grade 8 Military Specification Fasteners" Uninterrupted Upper Rail Platform & Mil-Spec 1913 Picatinny Rails and Mil-Spec Type III Hard Coat Anodized Finish. Dimensions: Length - 9.55" " Width - 2.23" " Height - 2.25" " Weight - 14.1 " Inside Diameter - 1.15"