Description
Polymer80 G150 AR15 80% Lower Receiver Only
If you are building a custom AR15 from the ground up, the polymer80 g150 ar15 80% lower receiver only is a solid starting point that gives you maximum control over your build. This isn’t a finished receiver; it’s an 80% blank that requires final machining to become a functional firearm component. Designed for the hands-on builder, this lower keeps your project legal while offering the same ergonomics and compatibility you expect from a standard AR15 lower. At just $55.99, it represents one of the most affordable ways to start a personalized rifle.
Overview
Polymer80 is known for making accessible, durable polymer frames and receivers for the DIY community. The G150 is their dedicated AR15 80% lower, machined from a reinforced polymer blend that holds up to standard mil-spec parts kits. Because it is a polymer80 g150 ar15 80% lower receiver only, you are receiving a roughly 80% complete component—the trigger pocket, safety selector holes, and buffer tube threads are not fully finished. This means you will need to complete the machining yourself, which is perfectly legal as long as you do not intend to sell the finished firearm. The receiver is compatible with nearly all standard AR15 upper receivers, LPKs, and buffer tubes, so you can mix and match parts from your favorite manufacturers.
Features & Specs
- Reinforced polymer construction: The G150 uses a high-impact polymer that resists cracking and warping, even under heavy use. It is lighter than aluminum but still rigid enough for reliable operation.
- Standard AR15 geometry: This 80% lower accepts all mil-spec AR15 components, including trigger groups, pistol grips, and buttstocks. You can use drop-in triggers or standard cassette triggers without modification.
- Integrated trigger guard and flared magwell: The design includes a molded trigger guard to reduce snagging, and a slightly flared magwell for faster reloads during range sessions or training.
The polymer80 g150 ar15 80% lower receiver only is a true 80% blank, meaning it requires drilling of the trigger pin holes, safety detent hole, and removal of material in the fire control pocket. You will also need to finish the buffer tube threads. All necessary jigs and instructions are sold separately, but the receiver itself is precisely molded to make the finishing process straightforward for anyone with basic tools.
Who It’s For
This lower is built for the builder who wants to learn the internal mechanics of the AR15 platform without buying a fully assembled receiver. It is ideal for hobbyists who enjoy completing a firearm from a blank and then customizing every part. Whether you are assembling your first AR15 or adding another build to your collection, the polymer80 g150 ar15 80% lower receiver only gives you a clean slate at a price that is hard to beat. Because it is an 80% receiver, it does not require a serial number or an FFL transfer at the time of purchase—this makes it a convenient option for those who prefer to keep their build private. Just remember that once you finish machining it, the resulting firearm must comply with all local, state, and federal laws.
Shipping & FFL
Since this product is an unfinished 80% lower receiver, it is not considered a firearm by the ATF and does not require an FFL transfer for shipment. We ship this item directly to your doorstep with no dealer involvement required. However, it is your responsibility to ensure that completing this receiver into a functional firearm is legal in your state and local jurisdiction. Some states and municipalities have restrictions on 80% receivers or require serialization after completion. Check your local laws before ordering. We do not accept returns on completed receivers or modified parts, so please verify your ability to finish this polymer80 g150 ar15 80% lower receiver only before you begin work.







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