RL556v3 80% AR15 Lower – Flat Dark Earth

If you are looking to build a custom AR-15 from the ground up, the rl556v3 80% ar15 lower – flat dark earth is a solid starting point. This 80% lower receiver gives you the freedom to complete the machining process yourself, giving you full control over your firearm’s registration status and build quality. Finished in a durable, non-reflective Flat Dark Earth coating, this lower is ready for the workbench and the range.

Overview

The rl556v3 80% ar15 lower – flat dark earth is a pre-machined, unfinished lower receiver that requires final milling to complete. It is made from forged 7075-T6 aluminum, the same material used in mil-spec lowers, and features a hardcoat anodized finish under the FDE cerakote. Whether you are a first-time builder or a seasoned hobbyist, this lower offers a clean canvas for your next project. It is compatible with all standard AR-15 upper receivers and parts kits.

Features & Specs

This receiver is engineered for precision and durability. The rl556v3 80% ar15 lower – flat dark earth comes with clearly marked jig points and a reinforced buffer tower area. Below are the key specifications and standout features:

• Material: Forged 7075-T6 aluminum, Type III hardcoat anodized with Cerakote Flat Dark Earth finish
• Compatibility: Accepts all mil-spec AR-15 lower parts kits and buttstocks
• Machining: Pre-drilled trigger and hammer pin holes; requires final pocket and fire control group milling

Additional details include a flared magazine well for faster reloads, an integrated trigger guard, and a tensioning screw for a tighter upper-to-lower fit. The FDE finish is scratch-resistant and matches most existing Flat Dark Earth furniture.

• Weight: Approximately 10.1 oz (unfinished)
• Caliber: Multi-caliber (compatible with 5.56 NATO, .223 Wylde, .300 Blackout, and others)
• Included: One lower receiver only; no jig, parts kit, or tools included

Who It’s For

This rl556v3 80% ar15 lower – flat dark earth is ideal for DIY builders who want to learn the machining process or prefer to keep their build off the books. It is also a great option for those who want a spare lower in a color that stands out from the usual black. If you have access to a drill press or router, a jig, and basic tools, you can finish this receiver in an afternoon. It is not recommended for shooters who want a complete, ready-to-assemble lower right out of the box.

• Best for: Experienced builders, preppers, and custom rifle enthusiasts
• Not for: Beginners without a jig or machining experience

Shipping & FFL

Because this is an 80% lower receiver, it is not considered a firearm by the ATF and does not require transfer through a Federal Firearms License (FFL) dealer. We ship directly to your door via UPS or FedEx. However, please check your local and state laws before ordering. Some states and localities regulate 80% receivers as firearms. It is your responsibility to ensure compliance with all applicable laws. Once you complete the machining, you are the manufacturer and must follow all federal and state requirements regarding serialization and transfer.