Product Overview
The Polymer80 RL556V3 RHINO 80% AR-15 Lower Receiver with Jig is a complete solution for the experienced firearm enthusiast looking to undertake a personal manufacturing project. This product is a “receiver blank,” often called an 80% lower, which is not a firearm and requires machining to completion. It is designed for individuals who enjoy the process of building, customizing, and understanding their equipment at a fundamental level. The included jig system simplifies the final machining steps, making the RL556V3 a practical entry point for builders new to working with polymer receivers. Its primary use is to serve as the foundational component in a custom AR-15 style build, resulting in a personalized, lightweight rifle platform.
Key Features
- Complete Jig-Included System: The RL556V3 comes with its dedicated, reusable jig. This fixture is engineered to properly align and guide your tools during the final milling and drilling operations, significantly reducing the complexity for a successful completion.
- Weapons-Grade Polymer Construction: Crafted from a reinforced, high-strength polymer composite, this receiver blank is designed to be incredibly lightweight yet exceptionally durable, capable of withstanding the stresses of semi-automatic firing cycles.
- Universal AR-15 Compatibility: Once finished, the stripped lower accepts all standard AR-15 lower parts kits (LPKs), pistol grips, triggers, and buffer assemblies. It is designed to mate seamlessly with mil-spec AR-15 upper receivers.
- Flat Dark Earth Finish: The RL556V3 is offered in a subdued Flat Dark Earth (FDE) color. This finish provides a non-reflective, tactical appearance and allows for easy two-tone builds when paired with a black or other colored upper receiver.
- Optimized for Lightweight Builds: The inherent light weight of the polymer material makes the finished lower ideal for constructing ultra-lightweight rifles, reducing overall carried weight for hiking, hunting, or extended training sessions.
- Reinforced Critical Areas: Polymer80 engineers the RHINO design with added material and strategic reinforcement around high-stress points like the buffer tube tower, trigger pin holes, and pistol grip screw area to ensure long-term structural integrity.
Performance & Applications
The completed Polymer80 RHINO lower receiver is built for reliable performance in a variety of civilian shooting disciplines. Its applications are defined by the builder’s choice of upper receiver, caliber, and components.
Ultra-Lightweight Hunting/Trekking Rifle: By pairing the lightweight polymer lower with a carbon fiber or pencil-profile barrel upper, builders can create a remarkably light and handy rifle. This is exceptionally advantageous for hunters covering long distances in the backcountry or for anyone seeking to minimize carried weight during outdoor excursions.
Custom Training and Recreational Firearm: The process of finishing and assembling the lower provides deep familiarity with the AR-15 platform’s mechanics. The resulting firearm is perfectly suited for recreational target shooting, training courses, and skill development, as the builder has intimate knowledge of every component in the lower assembly.
Specialized Home Defense Configuration: When assembled with a quality lower parts kit and matched with a reliable, short-barreled upper receiver, the finished build can serve as a capable home defense tool. Its lightweight nature allows for quick handling and maneuverability.
About Polymer80
Polymer80 is a leading innovator in the firearms manufacturing industry, specifically recognized for its expertise in advanced polymer formulations and receiver design. The company has built a strong reputation among builders for its commitment to engineering, precision, and providing legitimate tools for personal manufacturing. Their products are the result of significant research and development, focusing on creating durable, reliable platforms that meet the demands of serious enthusiasts. Polymer80’s prominence is built on a foundation of practical experience and a deep understanding of the builder community’s needs, establishing them as an authoritative brand in the DIY firearm component space. Their designs, like the RL556V3 RHINO, reflect a philosophy of empowering individuals with the tools for customization and craftsmanship.
Make Your Decision
The Polymer80 RL556V3 RHINO represents a specific type of project: the creation of a personalized firearm from a non-firearm component. It is for the individual who values the build process itself, seeks a deep understanding of their equipment, and desires a lightweight outcome. If you possess the technical aptitude, proper tools, and commitment to follow detailed instructions for safe and legal completion, this kit provides a robust platform. Consider your goals for the final rifle, your workshop capabilities, and ensure you understand all federal, state, and local laws regarding the manufacture of firearms for personal use before proceeding.
Polymer 80 AR-15 80% G150 Lower Receiver Gen 1 and Gen 2 Comparison and Review
Technical Specifications
Frequently Asked Questions
What makes this product stand out?
The Polymer80 RL556V3 – RHINO 80% AR15 Lower Receiver with Jig combines quality construction with reliable performance, offering exceptional value.
Is this a quality product?
Polymer80 has built their reputation on quality, and the Polymer80 RL556V3 – RHINO 80% AR15 Lower Receiver with Jig exemplifies that commitment.
What warranty is included?
Polymer80 stands behind this product with their manufacturer warranty.
Who is this product for?
This is ideal for discerning buyers who prioritize quality and reliability.
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