RL556V3 80% AR15 Lower – Black

The RL556V3 80% AR15 Lower in black represents a foundational component for builders who prioritize precision engineering and regulatory compliance in their custom AR15 platform. Manufactured by RL556V3, this 80% lower receiver is categorized as a firearm component requiring finishing by the end user, making it an ideal starting point for those seeking a fully personalized build. Machined from 7075-T6 aluminum, the RL556V3 80% AR15 lower – black delivers the structural integrity needed for high-round-count applications while maintaining compatibility with mil-spec upper receivers and parts kits. This product is designed for the builder who demands exacting tolerances and a clean, consistent black anodized finish that resists wear and corrosion.

Overview

The RL556V3 80% AR15 lower – black is an unfinished lower receiver that requires the end user to complete the fire control pocket, trigger pin holes, and safety selector detent channel to bring the component to a functional state. As an 80% receiver, it is not classified as a firearm under federal law when sold, allowing for direct shipment to your door without an FFL transfer at the time of purchase. The lower features a forged 7075-T6 aluminum construction with a mil-spec hard coat anodized finish in black, ensuring dimensional stability and resistance to surface degradation. The RL556V3 brand focuses on providing precision-machined blanks that maintain consistent wall thickness and alignment for a seamless fit with standard AR15 components.

Features & Specs

The RL556V3 80% AR15 lower – black is built around a set of specifications that prioritize accuracy and ease of finishing. The receiver is machined to within 0.005-inch tolerances on critical areas such as the trigger pin holes and magazine catch recess, reducing the risk of misalignment during final milling. The black anodized coating provides a non-reflective surface that meets MIL-A-8625 Type III specifications, offering superior hardness compared to standard anodized finishes. Key specifications include:

• Material: 7075-T6 aluminum forging with heat treatment per AMS-QQ-A-367
• Finish: Mil-spec Type III hard coat anodized in black with a thickness of 0.002 inches
• Dimensions: Accepts all mil-spec AR15 upper receivers, buffer tubes, and trigger groups
• Weight: 12.8 ounces (unfinished state)
• Markings: RL556V3 logo and serial number area (blank) on the magazine well

Additional features of the RL556V3 80% AR15 lower – black include a reinforced front pivot pin lug area that is 0.020 inches thicker than standard lowers for enhanced durability under heavy use. The trigger guard is integrated into the forging, eliminating a potential failure point associated with separate trigger guard assemblies. The lower also includes a flared magazine well opening with a 0.030-inch chamfer for faster reloads.

• Reinforced front pivot pin lug for increased structural integrity
• Integrated trigger guard forging with no separate pins
• Flared magazine well with chamfered edge for rapid magazine changes

Who It's For

The RL556V3 80% AR15 lower – black is intended for experienced firearm builders who possess the tools and knowledge required to complete an 80% receiver. This includes individuals with access to a drill press, milling machine, or CNC equipment, along with a thorough understanding of fire control pocket geometry and pin hole placement. The product is suitable for those building a custom AR15 for target shooting, competition, or personal defense, provided they comply with all applicable federal, state, and local laws. Builders should verify that the RL556V3 80% AR15 lower – black is legal in their jurisdiction before purchase, as some states and localities restrict the ownership or transfer of unfinished receivers. This component is not for first-time builders or those without the necessary machining capabilities.

• Experienced firearm builders with machining equipment and jigs
• Individuals seeking a custom AR15 platform with specific trigger and stock configurations
• Compliant builders who have verified local laws regarding 80% receivers

Shipping & FFL

The RL556V3 80% AR15 lower – black is classified as a non-firearm component under federal regulations and can be shipped directly to your residence or business without the need for an FFL transfer at the time of purchase. However, it is the responsibility of the buyer to ensure compliance with all applicable federal, state, and local laws regarding the possession and completion of 80% receivers. Some states, including but not limited to California, New York, New Jersey, Connecticut, and Washington, have specific restrictions on unfinished receivers. By purchasing this product, you acknowledge that you are legally permitted to own and complete an 80% lower receiver in your jurisdiction. All shipments are processed within one business day via UPS or FedEx with signature confirmation required. No international shipping is available for this item.