Say hello to the Daniel Defense Rail Interface System (RIS II) designed to meet the demanding standards of the United States Special Operations Command (SOCOM). This rail system is the ideal solution for operators seeking a robust and versatile mounting platform or a home defensive build that you want to ensure features enough room for your favorite optic, light, and laser.

Crafted from aircraft-grade 6061-T6 aluminum, the RIS II features a lightweight, free-floating barrel designed with minimal interference with the barrel harmonics. The 12.25-inch handguard includes an uninterrupted upper rail and multiple Mil-Spec 1913 Picatinny sections, allowing seamless attachment of optics and accessories.

A standout feature of the RIS II is its two-piece design, enabling the effortless integration of the M203 grenade launcher, so when you want things to go boom, we approve. Simply remove the lower rail section, and you’re ready to deploy, ensuring your setup remains efficient and tactical.

The battle-tested, 6-bolt bolt-up system guarantees a secure fit to your upper receiver, bolstered by Grade 8 military specification fasteners for ultimate reliability in the field. With a Mil-Spec Type III hard coat anodized finish available in Flat Dark Earth or Black, this rail system is not only functional but also built to withstand the rigors of operational use.

Upgrade your rifle with the Daniel Defense RIS II M4A1 Rail and experience the perfect blend of innovation, durability, and performance tailored for today’s modern operator.