80% AR15 Skeletonized Lower – Black | Polymer80

About this product

80% AR15 Skeletonized Lower – Black

The original forged AR-15 80% lower, now enhanced with a skeletonized design for ultimate lightweight performance. Crafted from premium 7075-T6 aluminum, this 80% lower offers exceptional strength and durability while reducing weight, making it ideal for building custom or ultra-light AR-15 rifles that stand out from the crowd.

Key Features and Benefits

• Material: Forged 7075-T6 aluminum for superior toughness and reliability.
• Design: Skeletonized magazine well reduces weight without compromising structural integrity, perfect for pairing with windowed or translucent magazines.
• Finish: Mil-spec type III hardcoat anodized in black for corrosion resistance and a professional look.
• Compatibility: Works with 5.56/.223, 300 BLK, and 6.5 Grendel calibers, ensuring versatility for various builds.
• Fitment: 100% mil-spec dimensions for seamless integration with standard AR-15 components.
• Additional Features: Includes an optional tension set screw for enhanced stability, and no fire/safe engravings for a clean, customizable appearance.
• Origin: 100% made in the USA, supporting local manufacturing and quality assurance.

Technical Specifications

• Construction: Forged 7075-T6 Aluminum
• Compatibility: 5.56/.223, 300 BLK, 6.5 Grendel
• Finish: Type III Hardcoat Anodized
• Weight: Reduced due to skeletonization (exact weight varies based on final machining)
• Dimensions: Standard AR-15 lower receiver size

Why Choose This Skeletonized Lower?

This Polymer80 product is engineered for enthusiasts and builders seeking a high-performance, lightweight option. The skeletonized design not only cuts weight but also adds a unique aesthetic, making your AR-15 build distinctive. Whether you’re into competitive shooting, hunting, or custom firearms, this lower provides the foundation for a reliable and personalized rifle.

What You’ll Need for Assembly

After fabricating your 80% lower, assemble it with essential components: a lower parts kit, buffer tube kit, and an upper assembly. For a hassle-free experience, consider pairing it with an AR build kit that includes all necessary parts in one package.

Expert Support and Resources

As a trusted name in the industry, Polymer80 offers comprehensive guides to assist you. Check out our step-by-step tutorials and FAQs to ensure a smooth building process. This product reflects our commitment to quality, innovation, and customer satisfaction in the firearms community.