Faxon Firearms FX338A5125-U Ion Complete Upper 338 ARC 12.50" Black Anodized Barrel

The Faxon Firearms FX338A5125-U Ion Complete Upper in .338 ARC delivers a compact, high-performance upper receiver assembly engineered for precision rifle builds and platform upgrades. Built around a 12.50-inch black anodized barrel, this complete upper combines proven Faxon design with the ballistic advantages of the .338 ARC intermediate cartridge, offering shooters a balanced solution for mid-range accuracy and manageable recoil in a portable package.

The 12.50-inch barrel length optimizes .338 ARC velocity while maintaining overall weapon length suitable for close-quarters training and tactical environments. The Ion upper assembly is constructed for durability under sustained fire, with the black anodized finish providing corrosion resistance in field conditions. At 5.59 lbs, the upper remains lightweight enough for extended shooting sessions without excessive fatigue, critical for training qualification courses or operational readiness drills. The compact profile makes this upper compatible with standard AR-15 lower receivers, enabling rapid platform assembly or reconfiguration for different mission requirements.

This configuration serves shooters building intermediate-power AR platforms for precision rifle applications, duty use, or advanced marksmanship training where .338 ARC's superior ballistics over 5.56 NATO matter in real-world performance. The complete upper assembly eliminates fitment guesswork and allows rapid deployment into service. Whether building a primary rifle or maintaining a spare upper for operational rotation, the FX338A5125-U Ion upper provides field-proven reliability and accuracy in a purpose-built format.