The Daniel Defense RIS II free-floating Picatinny rail systems are designed to allow individual operator to quickly, and without special tools, mount M203 Grenade Launcher and precisely mount SOPMOD accessories to host weapon without effecting point of impact. The Daniel Defense RIS II is an innovative upgrade to the M4 platform and is available for commercial purchase directly from Daniel Defense or any authorized distributor.
Specifications and Features:
Free Floating Barrel Design
Uninterrupted Upper Rail Platform
Aircraft Grade Aluminum
Hardened Steel Barrel Nut
Grade 8 Military Specification Fasteners
Mil-Spec 1913 Picatinny Rails
Material: Aircraft Grade 6061-T6 Aluminum
Finish: Military Specification Flat Dark Earth Anodizing
Weight 17.7 Ounces
Inside Diameter: 1.15"
Made in the USA!