The Workhorse complete upper receiver is meticulously engineered to deliver top-tier performance and reliability. Constructed with a forged Workhorse 7075-T6 aircraft-grade aluminum receiver, it combines superior strength with a lightweight design for optimal handling. The free-float rail handguard is designed with M-LOK attachment points at the 3, 6 and 9 o'clock positions, providing versatile mounting options for your accessories. A full-length picatinny accessory rail at the 12 o'clock position, featuring a signature notch cut, aligns perfectly with the upper receiver, enabling seamless integration of additional gear. The upper receiver is equipped with a 4150 chrome-moly steel black nitride barrel, ensuring exceptional durability and unmatched accuracy for consistent performance. Individually head-spaced, the barrel is paired with a matching 9310 steel bolt and an 8620 black nitride carrier, offering ultimate reliability and effortless cleaning. Designed for the discerning shooter, the Workhorse upper receiver is built to handle the most demanding situations while maintaining peak performance.

The 16 inches barrel offers versatile performance across a range of applications
The Bad Rack-15 ambidextrous charging handle allows for smooth and easy manipulation from either side of the firearm
Nitride finish, AR-15/M16 Bolt Carrier Group, providing increased performance and longevity with enhanced protection against wear
The free-float M-LOK handguard allows for free-floating barrel integration, ensuring accuracy and reducing the risk of barrel deflection during use
Anodized finish in sniper gray provides a matte, durable finish ideal for tactical environments

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Shipping Restrictions

It is the customer’s responsibility for understanding state laws regarding all purchases made. For a comprehensive list of all Shipping Restrictions, please refer to our Shipping Restrictions By State Page found Here.

All NFA Rules Apply

These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.

Local Law Compliance

Certain firearm parts and accessories, including AR-style upper receivers, are subject to complex and frequently changing federal, state, and local laws and regulations. While an upper receiver may be lawfully sold and shipped as a component, the legality of possessing, assembling, configuring, or using an upper receiver in certain states (e.g., California, Washington State) and localities depends on how it is assembled, combined with other components, and ultimately used. You are solely responsible for ensuring that any assembly, configuration, possession, or use complies with all federal, state, and local laws, including any so-called “assault weapon” bans and short-barreled rifle restrictions. We do not provide legal advice and are not responsible for unlawful configurations or uses.