Description

RL556V3 80% AR15 Lower – Gray

The RL556V3 80% AR15 Lower in Gray represents a precision-machined foundation for the discerning builder who demands exacting tolerances and a clean aesthetic. Manufactured by RL556V3, this component is classified as a raw lower receiver that requires final machining to become a functional firearm receiver. Designed for the AR15 platform, this 80% lower offers the builder full control over the fire control group specifications and finish work, while the gray anodized coating provides a uniform, corrosion-resistant surface ready for marking or customization. As an 80% lower receiver, it is not considered a firearm by the ATF and can be shipped directly to your door without an FFL transfer for the raw component itself, though final assembly and serialization requirements remain the buyer’s responsibility.

Overview

The RL556V3 80% AR15 Lower – Gray is a mil-spec dimensioned lower receiver that has been machined to the 80% completion state. This means the critical fire control cavity, trigger pin holes, hammer pin holes, and selector detent channels are pre-drilled, but the trigger slot, hammer pocket, and safety selector hole remain unfinished to allow the builder to complete the machining process to their exact specifications. The gray anodized finish is uniform across the entire receiver, including the buffer tube threading and takedown pin lugs, providing a durable base layer that resists scratching during handling. This RL556V3 80% AR15 lower – gray is compatible with all standard AR15 upper receivers, buffer tubes, and stock assemblies, making it a versatile starting point for a custom build.

Features & Specs

This RL556V3 80% AR15 lower – gray is manufactured from 7075-T6 aluminum billet, which offers superior strength-to-weight ratio compared to 6061 alloys. The receiver is machined on CNC equipment with a tolerance of +/- 0.001 inches on critical dimensions such as the pivot pin lug spacing and trigger guard pin holes. The gray anodizing is a Type III hard coat, providing a surface hardness of 60 Rockwell C minimum. Key specifications include a standard AR15 buffer tube thread pattern (1.250-18 UNS), a trigger guard that is machined as an integral part of the lower (non-removable), and a magazine well that is fully machined to accept all standard AR15 magazines, including PMAGs and GI-spec magazines.

• Material: 7075-T6 aluminum billet, heat-treated to T6 condition, with a tensile strength of 83,000 PSI minimum.
• Finish: Type III hard coat anodizing in gray, MIL-A-8625F compliant, with a thickness of 2.0 mils minimum.
• Completion State: 80% machined – requires final machining of the trigger slot, hammer pocket, and safety selector hole (jig and drill bits not included).

Who It’s For

This RL556V3 80% AR15 lower – gray is intended for experienced builders who possess the necessary tools, jigs, and machining knowledge to complete the final stages of receiver finishing. It is not a drop-in component and requires the use of a drill press or milling machine, a router-based jig system, and appropriate end mills or drill bits to complete the fire control group pocket. The builder should be familiar with AR15 trigger geometry, hammer pin alignment, and safety selector detent placement. This product is ideal for those who wish to bypass FFL transfer for the raw receiver, serialize the lower themselves, or build a firearm that is not registered on the federal level. It is also suited for custom builders who want to apply their own finish or engraving after machining.

• Ideal for hobbyists and gunsmiths who own a jig system and a drill press or router.
• Suitable for builders who want to complete a receiver to their own trigger and safety selector specifications.
• Not recommended for first-time builders without prior machining experience or a documented jig and bit setup.

Shipping & FFL

Because this RL556V3 80% AR15 lower – gray is classified as an 80% receiver and not a firearm under the Gun Control Act of 1968 (as defined by 27 CFR 478.11), it may be shipped directly to your residential or business address without an FFL transfer. No federal background check is required for the purchase of this raw component. However, the buyer is solely responsible for complying with all local, state, and federal laws regarding the completion, serialization, and registration of firearms. Some states and localities may restrict or prohibit the possession or completion of 80% receivers. It is the buyer’s responsibility to verify that their intended use is lawful in their jurisdiction. We recommend consulting a licensed FFL holder or attorney before completing the receiver. No returns or exchanges on machined receivers.

• No FFL required for shipment of this 80% lower receiver; ships via common carrier.
• Buyer assumes all liability for legal compliance regarding completion and registration.
• This product is not a firearm and is not serialized; final serialization is the buyer’s responsibility.