- Free Float
- Quad Rail
- MK18 9.55"
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.