WORKHORSE AR15/M4 Forged Upper Receiver — OD Green Anodize

Forged 7075-T6 upper receiver with MIL-A-8625F Type III OD Green hard anodize — service-grade strength, optics-ready, and built for repeatable alignment with Mil-Spec components.

Key Features

• Forged from 7075-T6 aircraft-grade aluminum for proven strength
• MIL-A-8625F Type III hard anodize — OD Green finish for corrosion resistance and low-visibility tactical appearance
• Precision CNC machining to Mil-Spec dimensions for repeatable upper/lower alignment
• Full-length M1913 Picatinny top rail — optics-ready for red dots, holographics, and magnified optics
• Optimized ejection port and feed-ramp interfaces for reliable cycling
• Reinforced barrel extension interface for secure headspacing and alignment
• Prepped for standard charging handle and forward assist where applicable
• 100% dimensional inspection and QA before shipment

Product Overview

The WORKHORSE® AR15/M4 Forged Upper Receiver — OD Green is a service-grade platform engineered for duty, competition, and hard-use builds. Forged 7075-T6 construction combined with tight CNC tolerances delivers long-term durability and consistent fit. The OD Green Type III anodize offers a functional, subdued finish ideal for field applications and builder aesthetics.

Why Choose WORKHORSE

• Durability: Forged construction resists deformation and stands up to repeated assembly/disassembly.
• Repeatability: Tight tolerances reduce play between uppers and lowers for consistent performance.
• Field-Ready Finish: OD Green Type III anodize combines protection with a tactical look.
• Flexibility: Accepts Mil-Spec barrels, handguards, and accessories for a wide range of builds.

Specifications

• Model: WORKHORSE® AR15/M4 Forged Upper Receiver — OD Green
• Material: 7075-T6 Forged Aluminum
• Finish: MIL-A-8625F Type III Hard Anodize — OD Green
• Rail: Full-length M1913 Picatinny top rail
• Compatibility: Standard AR15/M4 pattern — accepts Mil-Spec barrels, handguards, and charging handles
• Features: Ejection port and feed-ramp optimized interfaces; forward assist provision (where applicable)
• Weight: Forged design (varies by configuration)
• Country of Origin: USA (replace if needed)
• SKU: WHS-UPR-FRG-ODG-SKU (replace)

COMPATIBILITY & FITMENT

Designed to accept standard Mil-Spec AR-15 components (barrels, BCGs, buttstocks, grips). For AR pistol or SBR builds consult a qualified gunsmith and ensure compliance with NFA rules where applicable.

FEDERAL FIREARMS LICENSE REQUIRED

Please provide your FFL dealer information to sales@ravenrockarmory.com immediately after purchase. Orders without valid FFL documentation will be delayed or cancelled.

Fitment & Installation Notes

Built to standard AR15/M4 dimensions. Minor fitting may be required for some proprietary barrels, handguards, or aftermarket parts. If you are not familiar with firearms assembly, we recommend installation by a qualified gunsmith.

Important — Federal Firearms License Required

Note: A valid Federal Firearms License (FFL) transfer is required to purchase and receive this product where applicable. By ordering receivers or other regulated components you agree to follow all local, state, and federal laws. We will only ship to a valid FFL dealer address unless local law permits otherwise.

Ordering & Shipping

• Availability: In stock / backorder (update as appropriate)
• Shipping: Ships to FFL — buyer must provide valid FFL info at checkout
• Returns: Return policy applies to non-serialized parts — contact us before returning