Battle Arms Development WH556-URS-ODG Workhorse Upper Receiver Aluminum OD Green Anodized Receiver for AR15/M4

The Battle Arms Development WH556-URS-ODG Workhorse Upper Receiver is a precision-engineered aluminum upper receiver assembly designed for AR15 and M4 platform rifles. Built from high-quality aluminum and finished with durable OD Green anodized coating, this upper receiver combines corrosion resistance with the subdued aesthetics favored in professional tactical environments. The receiver maintains dimensional accuracy and tight tolerances consistent with military specifications, ensuring reliable feeding, chambering, and extraction across various upper receiver assemblies and bolt carrier group combinations.

The anodized finish provides superior protection against salt exposure, moisture, and corrosion compared to bare aluminum, extending component lifespan in demanding environments. At 0.64 lbs, the receiver contributes minimal weight while maintaining the structural rigidity necessary for consistent zero retention and operational durability. The OD Green color profile allows the upper receiver to integrate seamlessly into modern tactical configurations without introducing glint or reflection that compromises field positioning. Operators configuring AR15 or M4 variants will find this receiver compatible with standard .223 Remington and 5.56 NATO bolt carrier groups, charging handles, and rail systems.

This upper receiver addresses the needs of law enforcement, military personnel, and serious civilian shooters building or upgrading duty-ready AR15 platforms. Whether configured for patrol carbines, intermediate-range training rifles, or precision rifle builds, the WH556-URS-ODG receiver provides the foundation for a professional-grade assembly. The Battle Arms Development Workhorse series emphasizes reliable performance across high-round-count training cycles and operational deployment scenarios where component failure is not acceptable.

AR15 upper receiver selection directly impacts accuracy, durability, and component compatibility. The WH556-URS-ODG's mil-spec dimensions and anodized finish represent the standard expected in professional rifle builds, where precision engineering and proven material selection outweigh cost considerations. For operators prioritizing quality over budget alternatives, this receiver provides a documented baseline for reliable performance.