Daniel Defense DD RIS III M-LOK Rail 9.5" in FDE

MSRP: $501.00
(You save $22.00 )
ships from our shop in 2 to 5 days (+/-)

Daniel Defense RIS III M-LOK Rail 9.5" - Mk18

DD all-new RIS III rail system is modeled after the proven RIS II developed for SOCOM, but now in M-LOK for extreme durability with less weight.

The Daniel Defense RIS III Rail Interface System takes the battle-tested 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.

Perfect for Tactical Situations: The RIS III Rail Interface System is highly valued by U.S. Special Operations Command because of its proven reliability in tactical scenarios. The strength, versatility, and compatibility of the RIS III make it perfect for high-stress environments, from close-quarter engagements to long-range precision shooting.

Unparalleled Versatility: With the Daniel Defense RIS III Rail Interface System, versatility is an understatement. Its M-LOK attachment system allows you to easily add or remove accessories based on your needs. Whether it's a flashlight, laser sight, foregrip, or bipod, the RIS III offers multiple secure attachment points. With seven M-LOK slots, you have the flexibility to configure your firearm exactly the way you want it.

Optimized for Accuracy: The RIS III’s free-float design has been shown to enhance the accuracy of your firearm. Unlike other systems, it doesn't apply pressure to the barrel of the weapon, reducing the potential for inconsistent bullet trajectories. This key feature ensures that each shot you make is as accurate as possible, making the RIS III an exceptional choice for those seeking an edge in precision.

Weight Reduction for Optimum Performance: The Daniel Defense RIS III Rail Interface System is designed to be lighter than its predecessor, the RIS II. This weight reduction contributes to the overall maneuverability of your firearm, making it more efficient in dynamic environments. Despite its lightweight construction, the RIS III doesn’t compromise on durability, providing a sturdy platform for your tactical attachments.

User-Friendly Ergonomics: The RIS III Rail Interface System isn’t just about the technical features – it’s also about the user experience. This rail system is ergonomically designed to ensure comfort during long periods of use. The lightweight design, coupled with the slim profile, ensures the firearm feels balanced in your hands, reducing fatigue during prolonged periods of use.

Easy to Install: Unlike other complex rail systems, the Daniel Defense RIS III Rail Interface System is easy to install. The installation process is straightforward and doesn’t require specialized tools or technical expertise. This means that users can attach or detach the system within minutes, making it a great choice for both beginners and experienced firearm enthusiasts.


  • Mk18 RII Sized Rail for 10.3" to 11.5" barrels
  • Free-Floating Barrel Design for Increased Accuracy
  • M-LOK Attachment on 7 Surfaces Along Length of Handguard
  • Two-Piece Design for US SOCOM Command
  • Aircraft Grade 6061-T6 Aluminum Construction
  • Battle-Tested, 6-Bolt Bolt-Up System Securely Attaches Handguard to the Upper Receiver
  • Grade 8 Military Specification Fasteners
  • Uninterrupted Upper Rail Platform
  • Integral QD Swivel Attachment Points with Limited Travel
  • Mil-Spec Type III Hard Coat Anodized Finish (FDE or Black)
  • 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, Enabling M-LOK attachment on Upper and Picatinny Attachment on Lower


The Daniel Defense RIS III Rail Interface System is a game-changer in the realm of firearm customization. It effortlessly combines stellar performance with unmatched versatility, thanks to its robust construction, intuitive design, and the groundbreaking M-LOK attachment system. Designed with the end-user in mind, it's an interface system that stands head and shoulders above its competition. Trust in the tool that U.S. Special Operations Command has used since 2006, and experience the superior performance that the RIS III has to offer.


Product Weight 12.9 oz.
Rail Length 12.96"
Width 1.95
Height 2.16"
Inside Diameter 1.34"
Barrel Nut Steel (For Patented Bolt-Up System)
Gas System Carbine
Free Float Yes
Continuous Upper Rail Yes
Integrated Sling Swivel Attachment Point         Yes