Rail Interface System

Daniel Defense Rail Interface System | RIS III | M-LOK

The Daniel Defense RIS III Rail Interface System builds on the proven design of the two-piece RIS II rails, which have been used by the U.S. Special Operations Command (SOCOM) since 2006. It offers weight reduction and additional versatility through the use of M-LOK mounting points. Like the RIS II, it features a free-floating barrel design, a durable aircraft-grade aluminum construction, and a full-length upper rail platform with a Mil-Spec 1913 rail. Additionally, the RIS III offers seven M-LOK mounting points along the handguard as well as integrated QD swivel mounting points on both sides.

Free-floating barrel design for increased accuracy

M-LOK mounting points at 7 positions along the handguard

Constructed from 6061-T6 aircraft-grade aluminum

Proven 6-screw mounting system for secure attachment of the handguard to the upper receiver

Military-spec screws (Grade 8)

Full-length top rail platform with Mil-Spec 1913 Picatinny rail

Backward compatible with the RIS II Bolt-Up System—uses the same barrel nut and bolt-up plate

The upper RIS III rail is fully compatible with the lower RIS II rail