Rail Interface System III, RIS III 12.5" (BLACK)

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The Daniel Defense RIS III Rail Interface System takes the proven design of our two-piece RIS II rails—used by U.S. Special Operations Command (SOCOM) since 2006—and reduces weight while adding versatility by utilizing M-LOK attachment. You get the same proven free-float barrel design, durable aircraft-grade aluminum construction, and an uninterrupted upper rail platform with Mil-Spec 1913 rail of the RIS II. But you also get seven M-LOK attachment points along the handguard, plus integral QD swivel attachment points on both side.

Note: M203 hangers will interfere with pinned & welded muzzle devices.  Daniel Defense suggests contacting a qualified gunsmith for RIII rail installation on any firearm or URG with a pinned & welded muzzle device.


  • Free-Floating Barrel Design for Increased Accuracy
  • M-LOK Attachment at 7 Different Positions Along Length of Handguard
  • Aircraft Grade 6061-T6 Aluminum Construction
  • Proven 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 Rail
  • Backward Compatible with RIS II Bolt-Up System—Utilizes Same Barrel Nut & Bolt-Up Plate
  • RIS III Upper Rail Is Fully Compatible with RIS II Lower Rail


More Information
Product Weight16.61 oz.
Rail Length12.55"
Inside Diameter1.34"
Barrel NutSteel (For Patented Bolt-Up System)
Gas SystemRifle
Free FloatYes
Continuous Upper RailYes
Integrated Sling Swivel Attachment PointYes
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Guaranteed Satisfaction

All Daniel Defense products carry a 100% satisfaction guarantee against defects in original materials and workmanship. If your Daniel Defense product shows evidence of such defects, Daniel Defense will make every accommodation to fix, repair, or replace your product in the most expeditious manner possible. Daniel Defense does not warranty products or damage caused to our products by the correct or incorrect installation of other manufacturer's products.

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