RL556v3 80% AR15 Lower – Flat Dark Earth

The RL556v3 80% AR15 Lower – Flat Dark Earth delivers the foundation for a custom AR-15 build with precision engineering and durable construction. Designed for builders who demand reliability, this 80% lower receiver is machined from certified 7075-T6 aluminum and finished in a rugged Flat Dark Earth anodized coating. As an 80% lower, it requires final machining to complete the fire control pocket and trigger pin holes, giving you full control over the build process without serialization requirements. Whether you are starting a new project or expanding your inventory, the RL556v3 80% AR15 lower – Flat Dark Earth offers the quality and consistency expected from a professional-grade component.

Overview

The RL556v3 platform is engineered to meet mil-spec standards for fit, finish, and function. This 80% lower receiver is compatible with standard AR-15 upper receivers, parts kits, and accessories, allowing seamless integration into your build. The Flat Dark Earth finish provides corrosion resistance and a low-profile appearance suitable for tactical, recreational, or competition use. As an 80% lower, it leaves the critical fire control surfaces unmachined, ensuring compliance with federal regulations while delivering a blank canvas for experienced gunsmiths and hobbyists. The RL556v3 designation signifies the manufacturer’s commitment to tight tolerances and consistent wall thickness, reducing the risk of machining errors during completion.

Features & Specs

• Material and Construction: Precision machined from 7075-T6 aluminum billet, heat-treated to T6 temper for maximum strength and impact resistance. Hard coat anodized in Flat Dark Earth per Mil-A-8625 Type III specification for wear and corrosion protection.
• Design and Compatibility: 100% compatible with mil-spec AR-15 upper receivers, lower parts kits, buffer tubes, and stocks. Features a flared magazine well for faster reloads and an integral trigger guard that eliminates the need for separate installation.
• Machining Requirements: Unfinished fire control pocket, hammer and trigger pin holes, and selector lever detent channel. Full instructions and drilling templates available separately. Requires standard jig and router or drill press for completion.

Additional specifications include a hardcoat anodized finish inside and out, laser-engraved RL556v3 markings, and a weight of approximately 10.5 ounces. The Flat Dark Earth color is consistent across the entire receiver, including all recessed areas, ensuring a uniform appearance once assembled.

Who It’s For

The RL556v3 80% AR15 lower – Flat Dark Earth is built for intermediate to advanced builders who have experience with 80% lower completion. It is ideal for gunsmiths, custom rifle builders, and enthusiasts who want to create a personalized AR-15 without the constraints of a serialized receiver. This product is not recommended for first-time builders without access to proper tooling and jigs. It is suitable for those building a dedicated competition rifle, a lightweight hunting platform, or a durable field firearm. The Flat Dark Earth finish appeals to users who prefer a non-reflective, earth-tone aesthetic that matches modern tactical gear and accessories. If you require a complete, ready-to-assemble lower receiver, this 80% variant is not the correct choice; it is strictly for those who intend to perform the final machining steps themselves.

Shipping & FFL

This RL556v3 80% AR15 lower – Flat Dark Earth is not classified as a firearm under federal law and does not require shipment to a Federal Firearms License (FFL) dealer. It may be shipped directly to your residential or business address within the United States. However, you must verify that your state and local laws permit the possession and completion of 80% lower receivers. Some states and municipalities impose restrictions, registration requirements, or outright bans on unserialized firearm components. It is your responsibility to comply with all applicable laws before purchasing. This product is sold as a raw, unfinished component; no warranty is expressed or implied regarding its suitability for completion or use. By purchasing, you confirm that you are legally eligible to own firearm components and that you intend to complete this receiver in compliance with all federal, state, and local regulations. No FFL transfer is required, but we recommend consulting with legal counsel if you have any doubts about your jurisdiction.