{"product_id":"ris-ii-m4a1-fsp-assembly-fde","title":"Daniel Defense RIS II M4A1 FSP Assembly FDE – Free-Float Rail System","description":"\u003cp\u003eThe Daniel Defense RIS II M4A1 FSP Assembly in Flat Dark Earth is a drop-in free-float rail system designed for carbine-length AR-15 platforms with a front sight post configuration. This quad-rail handguard delivers continuous Picatinny rail coverage across all four sides, providing versatile mounting options for lights, lasers, grips, and other mission-critical accessories while maintaining the structural rigidity required for maintaining zero on mounted optics and devices.\u003c\/p\u003e\u003cp\u003eMachined from 6061-T6 aluminum with a Type III hard-coat anodized finish in FDE, this rail system installs without permanent modification to the barrel or gas system. The kit includes the RIS II rail, barrel nut, all necessary mounting hardware, and installation instructions. Compatible with standard carbine-length gas systems and A2 front sight posts.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Free-float quad rail handguard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e AR-15 carbine-length with front sight post\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 6061-T6 aluminum, Type III hard-coat anodized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Flat Dark Earth (FDE)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRail Standard:\u003c\/strong\u003e MIL-STD-1913 Picatinny on all four sides\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e RIS II rail, barrel nut, mounting hardware, instructions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse:\u003c\/strong\u003e Tactical, duty, home defense, competition shooting\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daniel Defense","offers":[{"title":"Default Title","offer_id":47950706606335,"sku":"DD0100408030","price":522.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/0434\/3807\/files\/DD0100408030.jpg?v=1766721771","url":"https:\/\/doublestackstore.com\/products\/ris-ii-m4a1-fsp-assembly-fde","provider":"Double Stack Store","version":"1.0","type":"link"}