|Manufacturing # / SKU
||Steel (For Patented Bolt-Up System)
|Gas System Length
|Continuous Upper Rail
|Integrated Sling Swivel Attachment Point
MK18 Rail Interface System II, RIS II
The Daniel Defense MK18 RIS II is designed to work specifically on the MK18 CQBR! 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 RIS II MK18 is NOT compatible with an M203.
The Daniel Defense RIS II is to be used in conjunction with the MK12 Low Profile Gas Block. Its free-floating Picatinny rail systems are designed to allow the individual operator to quickly, and without special tools, mount a M203 Grenade Launcher and precisely mount SOPMOD accessories to host weapon without effecting point of impact. The Daniel Defense RIS II is an innovative upgrade to the M4 platform and is available for commercial purchase directly from Daniel Defense or any authorized distributor.
- Free Floating Barrel Design
- Uninterrupted Upper Rail Platform
- Aircraft Grade Aluminum
- Hardened Steel Barrel Nut
- Grade 8 Military Specification Fasteners
- Mil-Spec 1913 Picatinny Rails
Materials & Construction
- Material: Aircraft Grade 6061-T6 Aluminum
- Finish: Black
- Length: 9.55"
- Width: 2.23"
- Weight 14.1 Ounces
- Inside Diameter: 1.15"
- Made in the USA!
Our Bolt Up System Barrel Nut Wrench is required for installation
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. Be sure to retain your sales slip as proof of purchase date when making a claim.