MAS Defense 80% AR-9 9mm Billet Lower Receiver for Glock Magazines – Raw Finish

Build Your Custom AR-9 with MAS Defense 80% Billet Lower Receiver

Take your firearms customization to the next level with the MAS Defense 80% AR-9 Billet Lower Receiver. Designed for builders who want complete control over their firearm’s configuration, this raw-finish lower receiver provides the perfect foundation for creating a personalized AR-9 platform that accepts reliable Glock magazines. Whether you’re building a compact pistol for home defense or a tactical rifle for competition shooting, this receiver offers the quality and compatibility serious builders demand.

Premium Construction and Materials

Machined from solid 7075-T6 aluminum billet, this lower receiver delivers exceptional strength and durability while maintaining precise tolerances. The billet construction provides superior rigidity compared to forged alternatives, ensuring consistent performance and longevity. The raw finish allows you to apply your preferred coating or cerakote, giving you complete aesthetic control over your final build.

Glock Magazine Compatibility

This AR-9 lower receiver is specifically engineered to work seamlessly with Glock-style magazines, offering reliable feeding and proven performance. Glock magazines are widely available, affordable, and known for their durability, making them an excellent choice for your AR-9 build. The magazine well is optimized for smooth insertion and ejection, while the magazine release is positioned for intuitive operation.

80% Completion for Legal Customization

As an 80% lower receiver, this component requires final machining to become a functional firearm receiver. This allows you to legally complete the manufacturing process yourself without requiring an FFL transfer for the receiver itself. The fire control group pocket and trigger pin holes need to be finished according to your specifications, giving you the freedom to create a truly unique firearm.

Technical Specifications and Features

• Material: 7075-T6 Aluminum Billet
• Caliber: 9mm Luger (9x19mm)
• Magazine Compatibility: Glock-style magazines (G17, G19, etc.)
• Finish: Raw (uncoated)
• Completion: 80% (requires machining of fire control group pocket)
• Receiver Type: AR-9 pattern lower
• Weight: Approximately 8.5 ounces (unfinished)
• Compatibility: Standard AR-15 upper receivers with 9mm conversion

Why Choose This AR-9 Lower Receiver?

Building your own AR-9 offers numerous advantages over purchasing a complete firearm. You can select every component to match your specific needs, from trigger systems to barrel lengths. This MAS Defense lower provides a superior starting point with its billet construction and Glock magazine compatibility. The raw finish means you’re not paying for a coating you might want to replace, saving you money while giving you maximum customization options.

Ideal Applications

This lower receiver is perfect for building:
– Home defense pistols with compact configurations
– Competition PCC (Pistol Caliber Carbine) rifles
– Suppressed 9mm builds for reduced noise
– Training firearms that share magazine compatibility with your handguns
– Custom showpiece firearms with unique finishes

Why Buy from Texas Gun Store?

At Texas Gun Store, we combine expertise with exceptional customer service. Our team includes experienced builders who can provide guidance on your project, and we stand behind every product we sell. We offer competitive pricing, fast shipping, and support our customers throughout their building process. When you shop with us, you’re not just buying parts – you’re gaining a knowledgeable partner for your firearms projects.

Ready to start your build? Visit our AR parts section for compatible components and accessories to complete your custom AR-9.