About this product

RL556v3 80% AR15 Lower – Flat Dark Earth

Begin your next custom build with the RL556v3 80% AR15 Lower in Flat Dark Earth. Machined from a single billet of 7075-T6 aluminum, this lower receiver provides a robust foundation for a fully functional AR-15 platform. Designed for the builder who values precision, this 80% lower requires final machining to complete the fire control pocket, giving you full control over the firearm’s legal status and build quality. The durable Flat Dark Earth Cerakote finish offers corrosion resistance and a professional, subdued appearance that complements any upper receiver configuration.

Overview

The RL556v3 80% AR15 Lower – Flat Dark Earth is a purpose-built component for the serious hobbyist and professional builder. As an 80% lower, it is not considered a firearm by the ATF and can be shipped directly to your door without an FFL transfer. The RL556v3 platform is known for its tight tolerances and compatibility with standard mil-spec parts kits, making it a reliable choice for a custom AR-15 lower. The Flat Dark Earth finish is applied using a high-temperature cure process that resists scratches, solvents, and wear.

Features & Specs

• Manufactured from 7075-T6 aluminum billet for high strength-to-weight ratio and long-term durability
• Flat Dark Earth Cerakote finish provides corrosion resistance and a non-reflective tactical appearance
• Compatible with all standard mil-spec AR-15 upper receivers, lower parts kits, and buffer tube assemblies

Critical specifications include the RL556v3 manufacturer designation, which indicates a third-generation design with improved trigger pocket geometry and reinforced rear takedown pin bosses. The lower receiver weighs approximately 10.6 ounces and is machined to accept drop-in triggers without modification. All pin holes are pre-drilled and threaded for set screws where applicable, ensuring a snug fit with anti-walk pins if desired.

• Pre-drilled and threaded bolt catch, selector, and trigger pin holes with set screw provisions
• Integrated trigger guard machined into the lower receiver for added strength and a clean profile
• Marked with RL556v3 logo and serial number placement area for personal engraving after completion

Who It’s For

This RL556v3 80% AR15 Lower – Flat Dark Earth is intended for individuals who possess the tools, knowledge, and legal right to complete an 80% lower receiver. It is ideal for the home gunsmith who wants to build a firearm without serialization requirements, the collector who values a non-transferable lower, or the competitive shooter who requires a precise, custom trigger fit. This product is not for those unwilling to perform the necessary machining work, as the fire control pocket must be completed by the buyer. It is also not intended for dealers or those who require a fully serialized firearm for retail sale.

Shipping & FFL

Because the RL556v3 80% AR15 Lower – Flat Dark Earth is classified as a non-firearm by the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF), it ships without the need for an FFL transfer. No background check is required, and the item can be shipped directly to your residential or business address. However, you must be 18 years of age or older to purchase, and it is your sole responsibility to verify that ownership and completion of an 80% lower receiver is legal in your state, county, and municipality. We do not ship to states or localities where such items are restricted or prohibited. By purchasing this item, you acknowledge that you are in compliance with all applicable laws and that you will complete the receiver in accordance with federal, state, and local regulations.

• Ships directly to your door with no FFL transfer required
• Buyer must be 18 years or older; local laws vary and must be verified
• Not available for shipment to restricted states or municipalities