Build Your Custom AR-15 with Polymer80 G150 80% Lower Receiver
Take your firearms customization to the next level with the Polymer80 G150 80% lower receiver. Designed for enthusiasts who want complete control over their AR-15 build, this unfinished receiver provides the foundation for creating a personalized firearm that meets your exact specifications. As an 80% lower, it requires final machining to become a functional firearm receiver, making it an ideal project for experienced builders looking to exercise their Second Amendment rights through legal DIY firearm construction.
Why Choose the Polymer80 G150?
The G150 represents Polymer80’s commitment to quality and innovation in the firearms industry. Unlike traditional aluminum lowers, this polymer-based receiver offers significant weight reduction without compromising durability. The reinforced polymer construction withstands regular use while maintaining dimensional stability, ensuring reliable performance with mil-spec AR-15 components.
Key Features and Benefits
- Lightweight Polymer Construction: Reduces overall firearm weight by approximately 30% compared to aluminum receivers
- Mil-Spec Compatibility: Works seamlessly with standard AR-15 parts kits and upper receivers
- Reinforced Design: Critical stress points feature additional material for enhanced durability
- Easy Machining: Designed for straightforward completion with common workshop tools
- Legal DIY Project</strong**: Perfect for firearms enthusiasts who enjoy building and customizing
Technical Specifications
The Polymer80 G150 maintains strict adherence to AR-15 dimensional standards while incorporating modern polymer technology. The receiver features reinforced buffer tube threads, strengthened pivot and takedown pin areas, and precisely molded fire control group pockets that guide proper machining completion.
Completion Requirements
This 80% lower receiver requires final machining to become a functional firearm. You’ll need basic workshop tools including a drill press or router, appropriate jigs (sold separately), and standard drill bits. The receiver features clear guide marks and relief cuts to assist with accurate machining. Always follow local laws and regulations regarding firearm manufacturing.
Ideal For Multiple Applications
- Custom Build Projects: Create your dream AR-15 with specific components and features
- Training and Education: Learn firearms mechanics through hands-on building experience
- Lightweight Builds: Perfect for hunting, competition, or recreational shooting where weight matters
- Backup Firearms</strong**: Build reliable spare lowers for emergency situations
Why Buy From Miami Shooters Supply?
FAQ: What Makes Us Your Trusted Firearms Partner?
Q: Why should I purchase from Miami Shooters Supply?
A: We bring over 15 years of firearms expertise, ensuring you receive professional guidance and quality products. Our team includes experienced gunsmiths and shooting enthusiasts who test and verify the products we sell.
Q: Do you stand behind your products?
A: Absolutely. We offer comprehensive customer support and work directly with manufacturers to resolve any issues. Your satisfaction is our priority, backed by our commitment to the shooting community.
Q: Can I trust your product knowledge?
A: Our staff regularly participates in firearms training and industry events, maintaining current knowledge about products like the Polymer80 G150 and proper build techniques.
For all your firearms and accessories, trust Miami Shooters Supply for quality, expertise, and reliable service.

| Material | Reinforced Polymer |
| Compatibility | AR-15 Mil-Spec Parts |
| Completion Status | 80% Lower (Unfinished) |
| Weight | Approx. 6.5 oz |
| Color | Black |
| Manufacturer | Polymer80 |
| Firearm Type | AR-15 Platform |
| Legal Status | Firearm Frame (Requires Machining) |
Frequently Asked Questions About This Product
Why buy Polymer80 G150 AR-15 80% Lower Receiver - Unfinished Firearm Frame from Miami Shooters Supply?
We’re a trusted firearms dealer offering fast shipping, competitive pricing, and 100% compliance with U.S. federal firearm laws. All orders ship from our licensed facility with full tracking and expert customer service.
Where can I buy Polymer80 G150 AR-15 80% Lower Receiver - Unfinished Firearm Frame?
You can purchase this item directly on our website and have it shipped to your local FFL dealer. You can also visit us in-store in Miami, Florida.
Is Polymer80 G150 AR-15 80% Lower Receiver - Unfinished Firearm Frame available now?
Availability is shown live on this page. If the “Add to Cart” button is visible, this item is currently in stock and ready to ship.
What category does this product belong to?
This product is listed under: Firearms, New Arrivals, New Releases.
What tags or features does this product have?
Key features and tags for this product include: .
Is this product legal in my state?
It is your responsibility to ensure this item is legal in your state or locality. We ship only to valid FFL dealers in compliance with U.S. laws. Always check your local regulations.
FFL Transfer & Firearms Laws for Polymer80 G150 AR-15 80% Lower Receiver - Unfinished Firearm Frame
All firearms, including the Polymer80 G150 AR-15 80% Lower Receiver - Unfinished Firearm Frame, must be shipped to a licensed Federal Firearms License (FFL) dealer. You will be required to complete a background check and any necessary paperwork before taking possession.
How It Works
- Place your order online.
- Provide your preferred FFL dealer information.
- We ship the firearm directly to your FFL.
- You complete the background check and pickup at the FFL.
Legal Compliance
We comply with all federal and state firearm laws. It is your responsibility to ensure the Polymer80 G150 AR-15 80% Lower Receiver - Unfinished Firearm Frame is legal in your state. Some states may have restrictions on certain firearm models or features.
Helpful Resources
Need assistance? Contact our Miami store for help with FFL transfers and firearm compliance.


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