Daniel Defense DD M4A1 FSP RIS II Complete Upper 14.5in Flat Dark Earth

Daniel Defense DD M4A1 FSP RIS II complete upper receiver built for 5.56mm NATO. This 14.5in configuration is permanently pinned to an overall 16in length and features a carbine-length gas system with an F-marked front sight base. The handguard is the Daniel Defense M4A1 FSP Rail Interface System (RIS) II for a rigid, precise fit, and it ships with an M16-profile bolt carrier group and an A1.5 fixed rear sight.

Key features

• Complete DD M4A1 upper receiver configuration in Flat Dark Earth with matching RIS II handguard
• 14.5in chrome-lined, cold hammer forged barrel with 1:7 twist and M4 profile
• Carbine-length direct impingement gas system with F-marked front sight base
• M4A1 FSP Rail Interface System (RIS) II CNC machined from 6061-T6 aluminum with Type III hard coat anodizing
• Surefire SF3P flash hider / suppressor adapter pinned and welded with black Ionbond DLC coating
• Mil-Spec receiver with indexing marks and M4 feed ramps and an M16-profile MP-tested bolt carrier group

A ready-to-run Daniel Defense M4A1 upper built with mil-spec materials and attention to alignment and staking.