

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 is to be used in conjunction with the MK12 Low Profile Gas Block.
Rail Length | 12.25" |
---|---|
Width | 2.23" |
Height | 2.25" |
Inside Diameter | 1.15" |
Barrel Nut | Steel (For Patented Bolt-Up System) |
Gas System | Carbine |
Free Float | Yes |
Continuous Upper Rail | Yes |
Integrated Sling Swivel Attachment Point | No |