Description
RL556v3 80% AR-15 Lower Receiver – Black: Build Your Custom Firearm
Take your AR-15 building to the next level with the RL556v3 80% lower receiver in sleek black finish. This unfinished firearm frame provides the foundation for creating a fully customized rifle while complying with federal regulations for homemade firearms. Designed for enthusiasts who want complete control over their build process, this lower receiver offers the perfect starting point for your next gunsmithing project.
Key Features and Benefits
- 80% Complete Design – Requires final machining to become a functional firearm receiver, allowing for legal DIY construction
- Durable Construction – Made from high-quality materials to withstand rigorous use and provide long-lasting performance
- Universal AR-15 Compatibility – Works with standard AR-15 parts and accessories for easy customization
- Matte Black Finish – Provides corrosion resistance and maintains a professional appearance
- Build Flexibility – Create your ideal AR-15 configuration with complete control over parts selection
Technical Specifications
The RL556v3 follows industry standards for AR-15 lower receivers, ensuring compatibility with most upper receivers, trigger groups, buffer tubes, and stock systems. The 80% completion status means critical fire control areas require machining by the end user.
Why Choose This 80% Lower Receiver?
As experienced firearms enthusiasts, we understand the appeal of building your own AR-15. The RL556v3 represents an excellent balance of quality manufacturing and DIY opportunity. Unlike completed receivers, this 80% lower allows you to engage in the gunsmithing process while creating a firearm tailored to your specific needs and preferences.
Important Legal Considerations
This product is an unfinished firearm receiver and requires additional machining to become functional. Users must comply with all federal, state, and local laws regarding firearm manufacturing. Once completed, the receiver must be properly serialized if required by law in your jurisdiction. We recommend consulting with legal experts familiar with firearms regulations in your area.
Machining Requirements
Completion of this 80% lower receiver requires specific tools and machining skills. Essential areas needing work include the fire control group pocket, trigger pin holes, and selector switch cavity. Proper jigs and machining equipment are necessary for accurate completion.
Why Buy From Florida Gun Store?
FAQ: Our Commitment to Firearms Enthusiasts
Q: Why should I purchase from Florida Gun Store?
A: As a trusted firearms retailer, we combine extensive industry knowledge with competitive pricing and excellent customer service. Our team includes experienced shooters and builders who understand your needs and can provide knowledgeable support for your projects.
We stand behind our products with reliable customer support and ensure all transactions comply with applicable laws. Whether you’re a first-time builder or experienced gunsmith, we’re committed to helping you successfully complete your firearm projects.

Ideal For:
- Firearms enthusiasts wanting to build custom AR-15 rifles
- Gunsmithing hobbyists and DIY firearm builders
- Those interested in learning firearm manufacturing processes
- Collectors building historical or specialty AR-15 variants
Start your custom AR-15 build today with the reliable RL556v3 80% lower receiver. Experience the satisfaction of creating your own firearm while developing valuable gunsmithing skills.
| Product Type | 80% AR-15 Lower Receiver |
| Finish | Black |
| Completion Status | 80% Complete (Requires Machining) |
| Compatibility | Standard AR-15 Parts |
| Material | High-Quality Firearm-Grade Material |
| Intended Use | Custom Firearm Building |






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