M4A1 Rail Interface System II, RIS II (FDE)

Rails & Mounts

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.