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.

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
• Length: 12.25"
• Width: 2.23"
• Weight 17.7 Ounces
• Inside Diameter: 1.15"
• Made in the USA!