.308 80% Lower Assembly | Polymer80

About this product

Build Your Custom AR-10 Rifle with the Polymer80 .308 80% Lower Assembly

Unleash your inner gunsmith with the Polymer80 .308 80% Lower Assembly, the perfect foundation for constructing a high-performance AR-10 rifle. This comprehensive kit includes everything you need: a precision-machined 80% lower receiver made from durable 7075-T6 aluminum billet, anodized in a sleek black finish for corrosion resistance, a complete LR-308 lower parts kit for smooth operation, and a 6-position buffer tube assembly with an adjustable M4 stock. Whether you’re a seasoned builder or a first-timer, this assembly simplifies the process, allowing you to focus on selecting your ideal upper receiver for a fully personalized firearm.

Key Features and Technical Specifications

• Material: Billet 7075-T6 Aluminum – Offers superior strength and lightweight properties.
• Color: Anodized Black – Provides a durable, scratch-resistant surface.
• Compatibility: Designed for .308/7.62x51mm platforms, ensuring broad compatibility with AR-10 uppers.
• Lower Parts Kit: Includes all essential components: bolt catch, hammer, trigger, magazine catch, pistol grip (A2 style), and more, all laser-cut and polished for a crisp trigger pull.
• Buffer Tube Assembly: Features a mil-spec six-position stock, carbine buffer, recoil spring, castle nut, and latch plate for reliable performance.
• Made in the USA: 100% manufactured in the United States, guaranteeing quality and compliance with industry standards.

Why Choose Polymer80?

As a trusted name in firearm components, Polymer80 delivers unmatched reliability and innovation. This assembly is ideal for DIY enthusiasts looking to create a custom rifle without the need for an FFL transfer, as it’s an 80% lower that requires finishing. With detailed instructions and robust customer support, building your AR-10 has never been easier. Elevate your shooting experience with a build that reflects your precision and style.