Product Overview
The RL556v3 80% AR15 Lower Receiver in Flat Dark Earth (FDE) represents a significant evolution in polymer lower design. This is a Type 1, 80% lower receiver, meaning it is not classified as a firearm and requires machining to completion by the end-user, in compliance with all applicable laws. Engineered for the experienced firearms enthusiast who values customization and understands the build process, the RL556v3 is the core component for building a lightweight, durable, and reliable AR-15 platform rifle. Its primary use is as the foundational frame for a custom rifle build, suitable for recreational shooting, competition, and training applications where reducing overall weight is a priority.
Key Features
- Proprietary Polymer Composite: Constructed from Polymer80’s reinforced polymer composite, this lower offers a exceptional strength-to-weight ratio and increased durability over earlier generations, resisting warping and impact stress.
- Solid Core Design: Unlike hollow polymer receivers, the solid core design provides a more rigid structure where it counts, enhancing stability and creating a more solid feel during operation.
- Flared Magwell: The integrated flared magwell facilitates faster and more intuitive magazine changes, a critical feature for competitive shooting or timed drills.
- Reinforced Buffer Tube Housing: The beefier, mil-spec buffer tube housing area is engineered to withstand the repeated impact from the buffer assembly, addressing a common wear point on polymer lowers.
- Threadless Grip Design: The pistol grip area utilizes a unique threadless attachment system specific to Polymer80 rifle lowers, ensuring a secure, wobble-free fit with compatible grips without the need for traditional screw threads that can wear in polymer.
- Complete Machining Kit: Includes a dedicated polymer jig, trigger hole drill guide, and necessary drill bits and end mill, providing the essential tools required for a precise and proper completion.
Performance & Applications
The RL556v3’s design translates to specific advantages in real-world use. For the competitive shooter in disciplines like 3-Gun, the flared magwell and significant weight reduction shave crucial seconds off stage times and reduce fatigue during long matches. The polymer construction also excels in environments where corrosion is a concern, as it is impervious to rust, making it a reliable choice for hunters or shooters in humid climates. Furthermore, for builders focused on creating a ultra-lightweight “scratch” build for hiking or patrol use, the RL556v3 serves as an ideal foundation, allowing for a fully customized rifle that meets specific weight and balance requirements without sacrificing critical durability at stress points.
About RL556v3
The RL556v3 is a product of Polymer80, a brand synonymous with innovation in the 80% receiver market. Polymer80 has built its reputation on extensive research and development in advanced polymer composites and engineering, specifically for firearms applications. Their iterative design process, evidenced by the “v3” designation, shows a commitment to addressing user feedback and improving upon previous designs. The proprietary material and features like the solid core and reinforced buffer tube housing are direct results of this hands-on expertise, offering a product that meets the demands of knowledgeable builders who require performance that goes beyond range toy status. The brand’s focus on providing a complete, user-friendly machining kit further underscores their understanding of the builder’s process from start to finish.
Why Buy From Imbert Smither Arms
Imbert Smither Arms, based in San Carlos, CA, is a retailer operated by individuals with deep technical knowledge of the products they sell. We focus on providing clear information and compliant access to components for experienced enthusiasts. Our inventory is curated with an emphasis on design integrity and manufacturer reputation, ensuring our customers receive products that meet stated specifications. We prioritize straightforward transactions and secure shipping, understanding the specific needs of the building community.
Make Your Decision
The RL556v3 80% Lower in Flat Dark Earth is a thoughtfully engineered platform for the informed builder. It balances the benefits of modern polymer technology—light weight and corrosion resistance—with strategic reinforcements at critical stress points. If your next build prioritizes a lightweight profile without compromising on core strength, and you possess the tools and knowledge to complete an 80% receiver in accordance with all federal, state, and local laws, this lower receiver is a compelling option. Review the included jig and guide system, ensure you have the remaining necessary tools and components, and you’ll be ready to begin a precise and rewarding build project.
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Technical Specifications
Frequently Asked Questions
What warranty is included?
RL556v3 stands behind this product with their manufacturer warranty.
Is this a quality product?
RL556v3 has built their reputation on quality, and the RL556v3 80% AR15 Lower – Flat Dark Earth exemplifies that commitment.
What makes this product stand out?
The RL556v3 80% AR15 Lower – Flat Dark Earth combines quality construction with reliable performance, offering exceptional value.
Who is this product for?
This is ideal for discerning buyers who prioritize quality and reliability.
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