Battle Arms Development Workhorse Upper Receiver, Aluminum Black Anodized AR15/M4 - WH556-URS

The Battle Arms Development WH556-URS Workhorse Upper Receiver is a black anodized aluminum upper receiver designed for AR-15/M4 platforms. This precision-machined component serves as the foundation for building or upgrading an AR-15 rifle and is compatible with standard AR-15 bolt carrier groups and charging handles. Dimensions are approximately 8.7" length × 5.5" width × 2.4" height.