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

For builders who demand precision and versatility from a single purchase, the Polymer80 RL556V3 – Rhino 80% AR15 Lower Receiver and PF940C 80% Pistol Frame (Black Only) delivers two foundational platforms in one streamlined package. This kit provides the unassembled components necessary to complete both a custom AR-15 rifle and a compact 9mm pistol, using Polymer80’s proven jig system and proprietary polymer blends. Whether you are expanding your workshop capabilities or building from the ground up, this matched set offers the reliability and modularity that serious firearm enthusiasts expect.

Overview

Polymer80 has established a reputation for producing durable, user-focused 80% frames that allow builders to complete their own firearms without serialization. The RL556V3 – Rhino lower receiver is engineered to accept standard AR-15 components, while the PF940C pistol frame is designed for Glock 19-compatible slides and internals. Both components are manufactured in the United States from high-impact, glass-reinforced polymer and arrive as 80% blanks, requiring drilling, milling, and finishing to function. This bundle is available exclusively in black, ensuring a uniform appearance across both builds.

Features & Specs

The Polymer80 RL556V3 – Rhino lower receiver and PF940C pistol frame share a family of design choices that prioritize strength, ergonomics, and ease of completion. Each frame includes a matching jig system, drill bits, and end mill to guide your work. The RL556V3 features an integrated trigger guard, flared magazine well for faster reloads, and a rear takedown pin detent channel that is pre-machined for simpler assembly. The PF940C frame incorporates a textured grip pattern, an extended beavertail, and a reinforced front rail section for improved durability under recoil.

• RL556V3 Rhino Lower: Accepts all mil-spec AR-15 upper receivers, buffer tubes, and trigger groups; includes universal jig with stainless steel drill bushings
• PF940C Pistol Frame: Compatible with Glock 19 Gen 3 parts; features a 1913 Picatinny rail, ambidextrous thumb rest, and aggressive grip texturing
• Both frames require drilling of three pin holes and pocket milling; jig system is reusable for multiple builds

Who It’s For

This bundle is intended for intermediate to advanced firearm builders who are comfortable using a drill press, hand drill, and router. If you already own a Polymer80 jig or have experience completing 80% lowers, this kit offers a logical next step. The combination of a full-size AR-15 lower and a compact pistol frame suits those who want to develop two separate builds simultaneously, or who prefer to keep a matched set for future projects. Beginners should note that completion requires mechanical skill, patience, and adherence to all applicable federal, state, and local laws regarding unregistered firearm frames.

• Ideal for builders who want both a rifle and pistol platform from one purchase
• Suits those who already own Polymer80 jigs or have experience with 80% lower completion
• Not recommended for first-time builders without prior guidance or shop access

Shipping & FFL

All orders containing the Polymer80 RL556V3 – Rhino 80% AR15 Lower Receiver and PF940C 80% Pistol Frame (Black Only) are shipped directly to your residential or business address. Because these are unfinished 80% frames, they are not classified as firearms by the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF), and do not require transfer through a Federal Firearms License (FFL) dealer. However, you are solely responsible for complying with all federal, state, and local laws regarding the completion and possession of unserialized firearm frames. Some states and municipalities restrict or prohibit the manufacture of unserialized firearms—please verify your local regulations before ordering. By purchasing this product, you confirm that you are legally eligible to possess firearms and that you will complete the frames in compliance with applicable law.

• No FFL transfer required for shipping; ships directly to your address
• Customer must verify legality in their jurisdiction before purchase
• Completion of frames is the sole responsibility of the buyer