80% Lower Fire/Safe Marked – Raw | Polymer80

About this product

Polymer80 80% Lower Receiver – Raw Aluminum Finish

Introducing our original forged 80% lower receiver, now available in a raw aluminum finish for ultimate customization. This uncoated version allows you to easily apply custom camouflage paint jobs or other coatings to match your personal style and needs. Identical in construction to our mil-spec anodized units, this 80% lower is crafted from high-strength 7075-T6 aluminum, ensuring durability and reliability for your AR-15 build.

Key Features and Specifications

• Compatibility: Designed for 5.56/.223, 300 BLK, and 6.5 Grendel calibers
• Material: Forged 7075-T6 aluminum for superior strength
• Finish: Raw aluminum, ready for custom painting or coating
• Fitment: 100% mil-spec, ensuring compatibility with standard AR-15 parts
• Engraving: Includes Fire/Safe markings for added authenticity
• Features: Broached magwell for smooth magazine insertion
• Origin: 100% made in the USA, supporting domestic manufacturing

What You Need to Complete Your Build

After fabricating your lower, assemble it with essential components: a lower parts kit, buffer tube kit, and an upper assembly. For guidance, follow our step-by-step picture guide or read our Ultimate Guide on How to Build an AR-15. New to building? Check out our FAQ on what an 80% lower is to get started.

Why Choose Polymer80?

With years of expertise in firearm components, Polymer80 delivers high-quality, reliable products for enthusiasts and builders. Our 80% lowers are designed for easy customization and compliance, making them a top choice for DIY gun projects. Trust in our USA-made craftsmanship for your next build.