The Daniel Defense RIS II free-floating Picatinny rail systems are designed to allow individual operators to quickly, and without special tools, mount the M203 Grenade Launcher and precisely mount SOPMOD accessories to host weapon without effecting point of impact.

The M4A1 RIS II is designed to accept an M203 grenade launcher while maintaining a free-float barrel. Remove lower rail assembly by loosening and then removing four lower rail attachment screws. Place two of the lower rail attachment screws …

A machined aluminum multi-rail handguard specifically designed for the Special Operations Command (SOCOM) M4A1 carbine, the RIS II enables installation of an M203 40mm grenade launcher, while allowing the barrel to free float. The M203 attaches to the bottom rail quickly and easily, without special tools or additional parts.

Find the full line of firearms, parts and accessories from Daniel Defense, including AR-15’s, AR-Pistols and Bolt Action Rifles for sport shooting and hunting.

2015年5月29日 · A common complaint about the RIS series is their weight. But using this widely referenced sheet, the C4 and RIS II are the same weight, the Larue is heavier, and the LITE III is only 3 ounces lighter. Why all the weight complaints since the RIS seems to be middle of the pack? Rail Weigth Comparison Chart

Incredibly rigid when installed yet weighing in at just 17.7 Oz, the RIS II M4A1 free float quad rail is the perfect option for clone-correct builds or anyone looking for the toughest rail on the market. Features: Uninterrupted top rail; Designed for and adopted by USSOCOM; Quad rail design includes rail covers; Configurable sling swivel ...

The Daniel Defense RIS II M4A1 FSB (Rail Interface System), designed for 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. DD designed a revolutionary product to meet the government’s need.

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 …

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.