This is a blemished 80% AR-15 lower receiver from Polymer80, featuring factory-applied Fire and Safe markings. Machined from 7075-T6 aluminum and finished in a hard anodized black coating, it’s a multi-caliber platform for your next custom rifle build. The cosmetic blemishes are minor and do not affect the receiver’s structural integrity or function, offering significant value for experienced builders.
Key Features
- Blemished 80% lower receiver with Fire/Safe selector markings pre-engraved.
- Constructed from forged 7075-T6 aluminum billet for maximum strength.
- Hard anodized Type III Class 2 black finish for corrosion resistance.
- Multi-caliber platform compatible with .223/5.56, 300 Blackout, 6.5 Grendel, and more.
- Requires machining to 100% completion; compatible with standard AR-15 jigs and parts kits.
Specifications
| Caliber / Type | Multi (AR-15 Platform) |
|---|---|
| Material | 7075-T6 Aluminum |
| Finish | Hard Anodized Black |
| Compatibility | Standard AR-15 parts kits and uppers |
| Weight | Approx. 8.5 oz (unfinished) |
For builders, an 80% lower is the foundation of a personalized firearm. This unit’s 7075-T6 aluminum construction matches mil-spec strength, while the pre-marked selector provides a professional touch. The blemish discount makes it a cost-effective choice for a hard-use build or a first-time project. Remember, finishing this receiver requires tools, skill, and compliance with all federal and state laws.
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