Daniel Defense MK18 RIS II Rail Black, Free Float Forend 9.55"

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1.57 LBS
  • Daniel Defense MK18 RIS II Rail Black, Free Float Forend 9.55"
  • Daniel Defense MK18 RIS II Rail Black, Free Float Forend 9.55"
  • Daniel Defense MK18 RIS II Rail Black, Free Float Forend 9.55"
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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. As important, special tools are not required to mount the M203 grenade launcher. This was accomplished by integrating all of the needed parts to free float the M203 into the rail itself. The Daniel Defense RIS II is to be used in conjunction with the MK12 Low Profile Gas Block.


  • Aircraft Grade 6061-T6 Aluminum
  • Free-Floating Barrel Design For Increased Accuracy
  • Two-Piece Design for USSOCOM Allows For the Attachment of an M203 Grenade Launcher When Lower Rail Section is Removed.
  • 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
  • Mil-Spec Type III Hard Coat Anodized Finish (FDE or Black)


  • Product Weight: 14.1 oz
  • Rail Length: 9.55"
  • Width: 2.23"
  • Height: 2.25"
  • Inside Diameter: 1.15"
  • Barrell Nut: Steel (For Patented Bolt-Up System)
  • Gas System: Carbine
  • Free Float: Yes
  • Continuous Upper Rail: Yes
  • Integrated Sling Swivel Attachment Point: No 
  • Manufacturer: Daniel Defense

WARNING This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to You must be 18+ years old to shop and or purchase on our website and 21+ to purchase Ammunition/Firearms. Check local laws before ordering as you certify you are of legal age and satisfy all federal, state, and local legal/regulatory requirements. There are NO returns or exchanges on armor, firearms, ammunition, PPE equipment. Ammo ships UPS ground to the lower 48 states.
We reserve the right to fix any critical errors.

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1 Review

  • 5
    Shipped in a timely manner

    Exactly what I ordered, brand new in the box. I had heard that botach has had trouble with orders before, but I had zero problems myself.

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