FN SCAR 16S Barrel Assembly 10" 1:7 Twist Fight Sight Assembly and Flash Hinder

The FN SCAR 16S Barrel Assembly 10" 1:7 Twist Fight Sight Assembly and Flash Hider is a complete, pre-assembled upper barrel solution engineered for operators requiring reduced overall length without sacrificing reliability. This cold hammer-forged, chrome-lined MIL-SPEC steel barrel ships with integrated front sight assembly, gas block, gas regulator, gas piston, and flash hider already installed—enabling field-ready deployment or immediate integration into existing SCAR platforms with minimal additional work.

The 10-inch barrel length delivers a balance between maneuverability and velocity, making it ideal for close-quarters operations, vehicle-mounted positions, or confined-space engagements where a full-length upper would be impractical. The 1:7 twist rate stabilizes standard 5.56mm ammunition across a wide spectrum of bullet weights, from lightweight 55-grain to heavier 77-grain rounds, ensuring consistent terminal performance across mission profiles. Chrome-lined bore and chamber resist corrosion and extend barrel life under sustained-fire conditions. Installation requires only a Torx T25 driver and a 62 In-Lb torque wrench, bringing this assembly online without requiring gunsmith intervention or specialized tooling.

This upper is suited for law enforcement tactical teams, military personnel conducting CQB-focused training, civilian operators prioritizing compact handling for home defense, and shooters building or modifying existing FN SCAR 16 rifle platforms. The pre-installed gas system and sight assembly eliminate the guesswork in component matching—a critical consideration when reliability depends on proper headspace and gas port timing. Replacement barrels like this one address wear, upgrade shorter-range precision platforms, or build dedicated short-barrel configurations for dynamic training environments where speed and control matter more than extreme standoff distance.