RL556v3 80% AR15 Lower – White

The RL556v3 80% AR15 Lower – White represents a precision-machined platform for builders who demand exacting tolerances and a clean, neutral finish. This 80% lower receiver is designed for the serious hobbyist or professional gunsmith seeking a dedicated project build. Manufactured by RL556v3, this component is classified as a firearm parts kit and requires additional machining to become a functional firearm receiver. Constructed from 7075-T6 aluminum, it offers a robust foundation for custom AR-15 configurations without the need for serialization at the time of purchase.

Overview

The RL556v3 80% AR15 Lower – White is a fully un-machined lower receiver, meaning it is not yet a firearm and can be shipped directly to your doorstep. It is compatible with standard AR-15 mil-spec upper receivers and parts kits. The “white” finish refers to the raw aluminum surface, which is free of anodizing or coating, allowing for custom cerakote, duracoat, or anodizing by the end user. This lower is CNC machined from a solid billet of 7075-T6 aluminum for superior strength and dimensional accuracy. The RL556v3 designation indicates the specific generation of this lower, featuring improved trigger pocket geometry and reinforced buffer tube threads compared to earlier models.

Features & Specs

This 80% lower receiver is engineered for precision building. Key specifications include: mil-spec trigger pocket dimensions, a reinforced rear takedown pin lug, and a flared magwell for faster reloads. The white finish is a raw, machine-cut surface that is ready for immediate finishing or can be used as-is for a utilitarian look. The receiver is 100% CNC machined with no forging flash or rough edges, ensuring a smooth building experience.

• Material: 7075-T6 Aluminum billet, white (raw) finish
• Compatibility: All mil-spec AR-15 upper receivers and LPKs
• Machining: 80% complete; requires drilling of fire control pocket and trigger pin holes

Additional features include a reinforced bolt catch recess, a threaded bolt catch pin for easier installation, and a tension screw for eliminating upper-to-lower play. The RL556v3 80% AR15 Lower – White also features a flared trigger guard for gloved use. The receiver is designed to accept standard AR-15 buffer tubes and stocks, with a 1/2″-28 thread pitch for the buffer tube. The trigger pocket is cut to accept both mil-spec and many aftermarket drop-in triggers without modification.

• Trigger Pocket: Mil-spec dimensions, compatible with drop-in triggers
• Buffer Tube Thread: 1/2″-28, mil-spec standard
• Finish: Raw white aluminum, ready for custom coating

Who It’s For

This product is intended for individuals who possess the tools, skills, and legal capacity to complete an 80% lower receiver into a functional firearm. It is ideal for builders who want to create a custom AR-15 with specific color schemes, trigger preferences, or stock configurations. The RL556v3 80% AR15 Lower – White is also suitable for gunsmiths looking for a high-quality base for customer builds or for those who prefer to avoid serialized receivers for privacy reasons. Because it is not a firearm, no background check is required for purchase, and it can be shipped directly to your home or business. However, once machined into a functional lower, it becomes a firearm and must comply with all federal, state, and local laws regarding possession and transfer.

• Ideal for: Hobbyist builders, custom AR-15 projects, gunsmiths
• Skill level required: Intermediate to advanced (requires jig and drill press or router)
• Legal status: Not a firearm until fully machined

Shipping & FFL

Because the RL556v3 80% AR15 Lower – White is classified as a firearm component and not a complete firearm, it does not require shipment to a Federal Firearms License (FFL) holder. It can be shipped directly to your residence or business via common carrier. However, it is the buyer’s sole responsibility to ensure compliance with all applicable federal, state, and local laws regarding the possession and potential completion of an 80% lower receiver. Some states and localities impose restrictions on the purchase or possession of unfinished receivers. By purchasing this item, you confirm that you are legally eligible to own and complete this component in your jurisdiction. No FFL transfer is required for this item, but once machined into a functional receiver, it must be serialized and transferred through an FFL if sold or given to another party. Always consult local laws before purchasing.