MAS Defense 80% AR-9 Billet Lower Receiver for Glock Mags in Flat Dark Earth (FDE)

Build Your Custom AR-9 with the 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 a premium foundation for their 9mm AR platform, this receiver offers exceptional durability, precision machining, and compatibility with popular Glock magazines. Whether you’re constructing a compact pistol for home defense or a lightweight carbine for range use, this lower provides the solid base you need for a reliable and accurate firearm.

Why Choose This 80% AR-9 Lower Receiver?

As experienced gunsmiths and firearm enthusiasts, we recommend this receiver for its superior billet construction and user-friendly design. Unlike forged lowers, billet receivers are machined from a solid block of 7075-T6 aluminum, resulting in enhanced strength, tighter tolerances, and a sleek, modern appearance. The 80% completion status means it’s legally unserialized and requires minimal machining to finish, making it ideal for DIY builders looking to create a personalized firearm without the hassle of FFL transfers.

Key Features and Benefits

• Glock Magazine Compatibility: Engineered to work seamlessly with Glock-style magazines, ensuring reliable feeding and easy access to affordable, high-capacity options.
• Flat Dark Earth (FDE) Finish: The durable Cerakote or anodized FDE coating not only looks great but also provides corrosion resistance and a low-glare surface for tactical applications.
• Precision Machining: CNC-machined to exacting standards for perfect fit with upper receivers and internal components, reducing the need for fitting and ensuring smooth operation.
• Lightweight and Ergonomic: Weighing approximately 8-10 ounces, it contributes to a balanced build, while the textured grip area enhances control during rapid fire.

Specifications and Build Details

This lower receiver is designed for the AR-9 platform, chambered in 9mm Luger. It features a standard AR-15 fire control group pocket, allowing use of common triggers and safeties. The magwell is optimized for Glock magazines, with a last-round bolt hold-open function for improved functionality. Builders will appreciate the included jig reference points and minimal material removal required to complete the fire control cavity, making it accessible even for those with basic machining skills.

Ideal for Various Applications

Perfect for building PCC (Pistol Caliber Carbine) competition guns, home defense pistols, or plinking rifles. Its compatibility with standard AR-15 parts kits means you can customize it with your preferred trigger, stock, and grip. For inspiration, check out our AR parts selection to complete your build.

Why Buy from Texas Gun Store?

At Texas Gun Store, we combine expertise with a commitment to customer satisfaction. Our team includes certified armorers who test and vet products like this MAS Defense lower to ensure quality and performance. We offer fast shipping, secure checkout, and dedicated support for all your firearm needs. Trust us for authentic products and reliable service, backed by years of experience in the firearms industry.