RL556V3 80% AR15 Lower – Black

If you are looking for a solid foundation for your next custom AR-15 build, the RL556V3 80% AR15 lower – Black is a practical starting point. This raw, un-machined lower receiver gives you the flexibility to complete the fire control pocket and trigger pin holes yourself, allowing you to create a firearm that is truly your own. Built from 7075-T6 aluminum and finished in a durable black anodized coating, this lower is designed to hold up to range time and field use. Whether you are a first-time builder or a seasoned gunsmith, the RL556V3 80% AR15 lower – Black offers a straightforward path to a reliable, custom rifle.

Overview

The RL556V3 80% AR15 lower – Black is a raw, unfinished lower receiver that requires you to mill out the trigger pocket and drill the fire control holes before assembly. This means you get to choose your trigger group, grip, and stock without paying for parts you do not need. The black anodized finish is consistent and resistant to wear, and the mil-spec dimensions ensure compatibility with standard AR-15 parts kits. This lower is categorized under Parts, so it ships as a non-firearm blank, giving you more control over your build timeline.

Features & Specs

This lower is machined from 7075-T6 aluminum, the same material used in mil-spec forged lowers, then hardcoat anodized in matte black. The RL556V3 80% AR15 lower – Black includes pre-marked pilot holes and a clearly defined pocket area, which simplifies your jig setup and machining process.

• Material: 7075-T6 aluminum for strength and longevity
• Finish: Type III hardcoat anodized in matte black
• Compatibility: Accepts standard AR-15 lower parts kits and buffer tubes

Additional specifications include a flared magazine well for easier reloads and a reinforced rear take-down boss. The overall weight is similar to a standard forged lower, keeping your build balanced.

• Pre-marked pilot holes for fire control and hammer pin locations
• Flared mag well for faster magazine changes
• Reinforced rear boss for added durability under recoil

Who It’s For

The RL556V3 80% AR15 lower – Black is designed for anyone who wants to build an AR-15 from the ground up without buying a complete receiver. It is ideal for hobbyists who enjoy hands-on projects and want to learn the internal mechanics of the platform. If you have access to a drill press or a router jig, this lower gives you the freedom to select every component yourself, from the trigger pull weight to the stock length. It also suits those who want to keep a spare lower on hand for future builds, since it is a raw blank that can be finished later. Whether you are building a lightweight carbine or a precision rifle, this lower provides a stable, mil-spec platform.

• DIY builders who want full control over trigger and grip selection
• Hobbyists looking for a weekend machining project
• Anyone wanting a spare lower for future customization

Shipping & FFL

Because the RL556V3 80% AR15 lower – Black is classified as a partially machined receiver (an unfinished blank), it does not require transfer through a Federal Firearms License (FFL) dealer when shipped. It is shipped directly to your doorstep as a non-firearm component. However, once you complete the machining and assemble it into a functional firearm, you must comply with all applicable local, state, and federal laws regarding possession, use, and transfer. It is your responsibility to verify that finishing an 80% lower is legal in your jurisdiction. We recommend checking with your local law enforcement or an attorney before beginning your build.