Polymer80 RL556V3™ and PF940Cv1™ Bundle – 80% Lower Recei…

Product Overview

The Polymer80 RL556V3™ and PF940Cv1™ Bundle is a comprehensive two-project kit designed for the experienced firearms hobbyist and builder. This package combines two of the most popular 80% platforms into one convenient purchase: an AR-15 style 80% lower receiver and a compact pistol 80% frame, each accompanied by its proprietary machining jig. The RL556V3 is a Polymer 80% lower receiver engineered to accept standard AR-15 lower parts kits and uppers, while the PF940Cv1 is a polymer frame compatible with a wide array of aftermarket components for Glock 19 Gen 3 and Glock 23 Gen 3 models. This bundle is intended for individuals who enjoy the process of building, customizing, and completing firearms for personal use, offering a deeply engaging project that results in a highly personalized firearm. Finished in a durable black, this bundle provides the core components to embark on two distinct and rewarding builds.

Key Features

• Dual-Platform Bundle: This 3-in-1 combo includes both an AR-15 80% lower (RL556V3) and a compact pistol frame (PF940Cv1), plus their respective precision jigs, offering significant value and project diversity for the dedicated builder.
• Weapons-Grade Polymer Construction: Both the lower and frame are manufactured from high-strength, reinforced polymer, offering a durable and lightweight foundation that meets rigorous performance standards.
• Precision Engineering & Compatibility: The RL556V3 lower is designed to accept all standard AR-15 lower parts kits and mil-spec upper receivers. The PF940Cv1 frame is meticulously crafted for compatibility with a vast selection of aftermarket and OEM parts for Glock 19/23 Gen 3 platforms.
• Included Professional Jigs: Each component comes with its dedicated, easy-to-follow jig system. These jigs provide the necessary guidance and stability for precise milling, drilling, and finishing, crucial for a successful build.
• Semi-Automatic Action Platform: When completed with the appropriate, legally sourced parts kits, both platforms are designed to function as reliable semi-automatic firearms, suitable for range use, training, and home defense.
• Stainless Steel Receptacles & Pins: Critical wear points and pin holes feature stainless steel inserts, enhancing durability, corrosion resistance, and long-term reliability of the frame and lower.

Performance & Applications

This bundle is tailored for specific, lawful applications centered on customization, skill development, and personalization. It is not a finished firearm and requires significant machining, additional parts, and tools to complete.

For the Custom Firearms Enthusiast: This bundle is the ultimate starting point for a builder who values a tailored fit and unique specifications. The PF940Cv1 frame allows for extensive ergonomic customization—stipple patterns, grip reductions, and trigger guard undercuts—before assembly. Similarly, the RL556V3 lower serves as a blank canvas for a custom AR-15 build, where the builder selects every component, from the trigger and safety to the stock and buffer system, resulting in a rifle precisely configured to their preferences.

For the Technical Hobbyist & Skills Builder: The process of completing an 80% receiver is a project that develops practical machining, tooling, and mechanical assembly skills. This bundle provides two distinct projects: one focusing on the pistol platform’s frame and fire control system, and the other on the modular rifle platform’s lower receiver assembly. Successfully navigating both builds offers a comprehensive understanding of the function and interaction of components in two of the most popular firearm designs in the world.

For the Prepared Citizen (Home Defense & Training): Once legally completed and assembled into a functioning firearm with a serial number (if required by law), the resulting platforms are suited for responsible, lawful applications. The compact G19/23-compatible pistol offers a concealable option, while the AR-15 platform built on the RL556V3 lower is a versatile rifle suitable for dynamic training courses, recreational shooting, and, when appropriately configured, serving a role in a home defense strategy. Always ensure compliance with all local, state, and federal laws regarding manufacture, possession, and use.

About Polymer80

Polymer80 is a recognized leader in the firearms manufacturing industry, specifically known for pioneering innovative, high-quality polymer frames and receivers for the enthusiast market. The company has built its reputation on a foundation of engineering expertise, utilizing advanced polymers and precise injection molding techniques to produce components that meet exacting standards for strength, durability, and dimensional accuracy. Their deep understanding of firearm design and function is evident in products like the PF940Cv1 and RL556V3, which are engineered for seamless compatibility with a wide ecosystem of existing parts. Polymer80’s commitment to providing builders with reliable, well-designed platforms, supported by intuitive jig systems, has established them as an authoritative and trusted brand among knowledgeable firearms hobbyists who value the process of building and customization.

Make Your Decision

The Polymer80 RL556V3 and PF940Cv1 Bundle is a substantial offering for the serious builder looking to undertake two of the most rewarding projects in the DIY firearms space. It delivers exceptional value by combining two premium 80% platforms with the essential tools to complete them correctly. Before purchasing, ensure you have access to the necessary tools (drill press or router, drill bits, end mills), the required AR-15 and Glock-compatible parts kits, and a clear understanding of the time, skill, and legal responsibilities involved in manufacturing a firearm for personal use. This bundle is for those who derive satisfaction from the build process itself and demand a foundation from a trusted industry expert like Polymer80.

Technical Specifications

Frequently Asked Questions