Polymer80 RL556V3 – Rhino 80% AR15 Lower Receiver and PF940C 80% Pistol Frame (Black Only)

If you are looking to take on a build that gives you full control over your firearm’s ergonomics and finish, the Polymer80 RL556V3 – Rhino 80% AR15 Lower Receiver and PF940C 80% Pistol Frame (Black Only) combo delivers a solid foundation for two very different platforms. This set from Polymer80 pairs their Gen3-style PF940C compact pistol frame with the RL556V3 lower receiver, both in black, and both requiring your hands-on work to complete the 80% machining process. Whether you are aiming for a custom AR-15 build or a compact 9mm pistol, this is a practical starting point that does not require an FFL transfer since the frames are not yet serialized firearms.

Overview

The Polymer80 RL556V3 – Rhino 80% AR15 Lower Receiver and PF940C 80% Pistol Frame (Black Only) bundle is designed for builders who want to complete two projects from a single purchase. The RL556V3 lower is compatible with standard AR15 parts kits and accepts all Mil-Spec upper receivers, while the PF940C frame is built to accept Gen3 Glock 19 internals and magazines. Both pieces are made from impact-resistant polymer and come with the necessary jigs and instructions to finish the pockets and pin holes. This is a straightforward kit for anyone comfortable with basic tool work.

Features & Specs

• RL556V3 lower receiver uses a reinforced front takedown pin boss and a flared magazine well for easier reloads; compatible with all Mil-Spec AR15 lower parts kits and buffer tubes
• PF940C pistol frame includes a built-in locking block rail system and accepts Gen3 Glock 19 slides, barrels, and lower parts; frame features an undercut trigger guard and textured grip panels
• Both frames are made from black polymer with steel-reinforced insert points; the RL556V3 ships with a universal jig, while the PF940C includes its own jig and end mill bit set

Who It’s For

This combo is ideal for the home builder who wants to work on two different builds without buying separate jig kits. It is especially suited for someone who already has some experience with 80% lowers, or who is ready to learn on a well-documented frame set. The RL556V3 – Rhino 80% AR15 Lower Receiver and PF940C 80% Pistol Frame (Black Only) is not for someone looking for a complete rifle or pistol out of the box—it requires time, a drill press or router, and patience to finish the pockets and drill the pin holes. If you enjoy the process of building and want to save on the cost of two separate jig kits, this is a practical choice.

Shipping & FFL

Because both the polymer80 rl556v3 – rhino 80% ar15 lower receiver and pf940c 80% pistol frame (black only) are classified as 80% unfinished receivers, they are not considered firearms by the ATF and can be shipped directly to your home address. No FFL transfer is required for purchase. However, once you complete machining and assemble the lower or pistol frame, you are responsible for complying with all federal, state, and local laws regarding serialization and ownership. We recommend checking your local regulations before beginning your build. This product ships within three business days, and standard shipping rates apply.