About this product

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

For the serious builder who demands precision and reliability from the ground up, the Polymer80 RL556V3 – Rhino 80% AR15 Lower Receiver and PF940C 80% Pistol Frame (Black Only) delivers a matched set of uncompleted platforms engineered for end-user finishing. This kit combines two of Polymer80’s most trusted 80% platforms in a single, cohesive build package. Whether you are constructing a custom AR-15 rifle or a compact 9mm pistol, this black-only combo provides the foundation for a professional-grade firearm without requiring a serialized transfer at the point of sale. The polymer80 rl556v3 – rhino 80% ar15 lower receiver and pf940c 80% pistol frame (black only) is designed for the experienced hobbyist who values control over every aspect of their build.

Overview

The Polymer80 RL556V3 Rhino lower receiver is a third-generation 80% AR-15 lower, machined from high-impact reinforced polymer with a hardened brass trigger pin insert. It is paired with the PF940C compact pistol frame, a Glock 19-compatible 80% frame known for its aggressive texture and ergonomic grip angle. Together, these components represent a complete starting point for two distinct platforms. The polymer80 rl556v3 – rhino 80% ar15 lower receiver and pf940c 80% pistol frame (black only) is offered exclusively in black, ensuring a uniform aesthetic across both builds. Each frame requires standard machining, drilling, and finishing by the end user to complete the fire control group pockets and pin holes.

Features & Specs

• RL556V3 Rhino lower receiver: Reinforced polymer construction with integrated trigger guard, flared magwell, and oversized bolt catch recess. Accepts all standard AR-15 small parts and buffer tube assemblies. Compatible with mil-spec and aftermarket upper receivers. Weight: approximately 8.5 ounces.
• PF940C pistol frame: Compact 9mm frame compatible with Gen 3 Glock 19 slide assemblies and magazines. Features a 1911-style grip angle, aggressive texture panels, and a reinforced front locking block. Includes a steel rear rail system and a dust cover. Overall length: 7.0 inches.
• Both frames are manufactured from proprietary Polymer80 Nylon/Fiberglass blend for impact resistance and dimensional stability. Each comes with a complete jig kit, drill bits, and end mill instructions. No serial number is applied; the end user is responsible for compliance with all federal, state, and local laws regarding 80% frames.

Who It’s For

This product is intended for the skilled builder who wants to complete two different platforms from a single purchase. It is ideal for the advanced hobbyist who has experience with 80% lower finishing techniques, including drilling, routing, and filing. The polymer80 rl556v3 – rhino 80% ar15 lower receiver and pf940c 80% pistol frame (black only) is not recommended for first-time builders due to the precision required for the PF940C frame rails and the RL556V3 trigger pocket. It is also suited for those who prefer to maintain a unified color scheme across their rifle and pistol builds. This is a project for the dedicated craftsman, not a plug-and-play product.

Shipping & FFL

This product consists of two 80% receivers that do not meet the legal definition of a firearm under federal law as they are not yet in a functional state. Therefore, no Federal Firearms License (FFL) transfer is required for shipment. However, by purchasing this kit, you acknowledge that you are legally allowed to possess and complete these frames in your jurisdiction. It is your sole responsibility to understand and comply with all applicable federal, state, and local laws regarding the manufacture and possession of firearms. Polymer80 recommends that you consult legal counsel before beginning your build. We ship this item directly to your door using a common carrier with adult signature required. No additional FFL fees apply.