Product Description The Daniel Defense Rail Interface System (RIS II) M4A1 FSP handguard was developed at the request of U.S. Special Operations Command (SOCOM) for the SOPMOD II program. This 12.25-inch, 2-piece, free-floating style handguard is engineered to accommodate a standard front sight base (FSP) on a carbine-length gas system, while providing a rigid Picatinny rail interface for mounting lights, grips, lasers, and other accessories. Constructed from durable 6061-T6 aluminum and finished in Flat Dark Earth anodizing, it is built for hard-use AR-15 applications and supports free-floating an M203 grenade launcher without additional parts. Product Highlights SOCOM-requested Daniel Defense RIS II design created for the SOPMOD II program FSP cutout accommodates a standard front sight base on carbine-length gas systems 12.25" 2-piece, free-floating style handguard for AR-15 platform rifles 6061-T6 aluminum construction with Flat Dark Earth anodized finish for corrosion resistance Integrated Picatinny rail surfaces for secure accessory mounting Specs Brand: Daniel Defense Series/Model: M4A1 FSP RIS II Handguard Product Type: Forend / Handguard Platform Compatibility: AR-15 / AR platforms Length: 12.25 in Construction: 6061-T6 Aluminum Finish/Color: Flat Dark Earth, Anodized Style: Free-floating UPC: 852548002506 Manufacturer Part Number: 0100408030 Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&&';;s manufacturer.