Polymer80 RL556V3 RHINO 80% AR-15 Lower Receiver
Take your firearm customization to the next level with the Polymer80 RL556V3 RHINO 80% AR-15 lower receiver. This innovative product allows you to build a personalized AR-15 from the ground up, providing both legal advantages and creative freedom. As an 80% lower receiver, it requires final machining to become a functional firearm component, making it an ideal project for experienced builders and enthusiasts who want complete control over their firearm’s specifications.
Key Features and Benefits
- 80% Completion: This lower receiver is 80% finished, meaning it requires drilling and milling to complete. This design complies with federal regulations for unfinished receivers, offering flexibility in ownership and transfer.
- High-Strength Polymer Construction: Made from durable, reinforced polymer, the RL556V3 is lightweight yet robust, resistant to corrosion and environmental factors for long-lasting performance.
- RHINO Design: The RHINO model features enhanced ergonomics and a streamlined profile, making it compatible with standard AR-15 parts and accessories for easy customization.
- DIY Project Ready: Perfect for gunsmithing enthusiasts, this lower receiver allows you to machine it to your exact specifications, creating a truly unique firearm tailored to your needs.
- Cost-Effective Solution: Building your own AR-15 with an 80% lower can be more affordable than purchasing a complete firearm, especially when paired with quality components from Republic Arms WA.
Technical Specifications
The Polymer80 RL556V3 is designed for AR-15 platforms, featuring standard dimensions that ensure compatibility with most upper receivers, triggers, and stocks. Its polymer construction reduces overall weight without sacrificing durability, making it suitable for various applications from target shooting to hunting. Note that this is a lower receiver only; you will need additional parts like a lower parts kit, buffer tube, and stock to complete your build.
Why Choose Republic Arms WA?
At Republic Arms WA, we are committed to providing high-quality firearm components and exceptional customer service. Here’s why you should buy from us:
- Expertise: Our team has extensive knowledge in firearms and DIY builds, offering reliable advice and support for your projects.
- Trustworthiness: We prioritize compliance with all federal and state regulations, ensuring a safe and legal purchasing experience.
- Quality Assurance: Every product, including this Polymer80 lower receiver, is sourced from reputable manufacturers to guarantee performance and reliability.
- Customer-Focused: We provide detailed product information and responsive support to help you make informed decisions and complete your builds successfully.
FAQ: Why Buy From Us?
Q: Is Republic Arms WA a reliable source for firearm parts?
A: Yes, we are a trusted retailer with a focus on quality, compliance, and customer satisfaction. We offer genuine products like the Polymer80 RL556V3 and provide expert guidance for all your firearm needs.
Q: Do you offer support for DIY builds with 80% lowers?
A: Absolutely! Our team can assist with technical questions and recommend compatible parts to ensure your build goes smoothly. Check out our website for more resources and products.
Q: What makes this Polymer80 lower receiver a good choice?
A: Its 80% design offers legal flexibility, while the polymer construction provides durability and weight savings. It’s a versatile option for custom AR-15 builds, backed by Polymer80’s reputation for innovation.
Get Started on Your Build Today
Ready to create your custom AR-15? The Polymer80 RL556V3 RHINO 80% lower receiver is the perfect foundation. Pair it with quality components from our selection to build a firearm that meets your exact specifications. Order now and experience the satisfaction of a DIY project done right!

| Product Type | 80% AR-15 Lower Receiver |
| Material | Reinforced Polymer |
| Completion Level | 80% (Requires Machining) |
| Compatibility | Standard AR-15 Parts |
| Weight | Lightweight (Polymer Construction) |
| Color | Black |
| Brand | Polymer80 |





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