Windham Src Upper 556 16" Ft Blk

The Windham SRC Upper 556 16" FT Black is a purpose-built upper receiver assembly engineered for AR-15 platform shooters who demand modular flexibility and consistent performance. Designed as a complete upper assembly, this component delivers the ballistic efficiency of an intermediate cartridge in a configuration optimized for tactical carbine shooting, law enforcement patrol, and precision rifle training. At 5.69 lbs and measuring 32 inches in overall length, the Windham SRC upper strikes a practical balance between maneuverability in confined spaces and sight radius for accurate target engagement.

The 16-inch barrel length on this upper receiver represents the performance sweet spot for 5.56mm NATO/.223 Remington cartridges, delivering velocity sufficient for both combat-effective range and standard magazine compatibility across the AR ecosystem. This configuration is widely adopted by military units, law enforcement agencies, and serious civilian shooters because it minimizes muzzle rise during rapid fire while maintaining projectile energy to 300 meters and beyond. The flat-top receiver design accommodates standard Picatinny rail mounted optics, eliminating the need for canted carry handles and providing shooters with true mechanical zero on their preferred sighting systems.

This upper is suited for operators building a complete rifle, upgrading an existing platform, or staging a quality spare upper for duty rotation. The modular upper-receiver-lower-receiver design of the AR-15 platform means this assembly can be installed on any compatible lower receiver within minutes—no gunsmithing required. Whether deployed for home defense, defensive rifle training, or duty use in professional security roles, the Windham SRC upper receiver provides the foundation for a reliable, accurate system capable of years of service. The black anodized finish resists corrosion and is consistent with modern tactical rifle aesthetics.