A rail integration system (RIS; also called a rail accessory system (RAS), rail interface system, rail system, mount, base, gun rail, or simply a rail[1]) is a generic term for any standardized attachment system for mounting firearm accessories via bar -like straight brackets (i.e. "rails") often with regularly spaced slots.

The Daniel Defense RIS III Rail Interface System takes the battle-tested design of our two-piece RIS II rails—used by U.S. Special Operations Command (SOCOM) since 2006—and reduces weight while adding versatility by utilizing M-LOK attachment.

Looking for something specific? 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.

You get the same proven free-float barrel design, durable aircraft-grade aluminum construction, and an uninterrupted upper rail platform with Mil-Spec 1913 rail of the RIS II. But you also get seven M-LOK attachment points along the handguard, plus integral QD …

Daniel Defense Quad Rail Handguards and free float rails available for your AR15 offer a ton of improvements like durability and modularity. Upgrade today!

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 Daniel Defense RIS III Rail Interface System takes the proven design of our two-piece RIS II rails—used by U.S. Special Operations Command (SOCOM) since 2006—and reduces weight while adding versatility by utilizing M-LOK attachment.

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 the host weapon without effecting point of impact.

Knights RIS for the MK18 Mod 0. replaces the standard hand guards on 9mm and 5.56 light weight carbine barrels. Installation takes about 5-10 minutes and requires no tools. Picatinny rails on all four sides allow endless possible mounting solutions for accessories such as sling mounts, vertical forearm grips, flashlights and more.

2020年3月25日 · 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.