Elevate Your AR-15 9mm Build: The Angstadt Arms 0940 Lower Receiver Set

Are you an AR-15 enthusiast looking to embark on a Pistol Caliber Carbine (PCC) build? Perhaps you're a competitive shooter in the USPSA PCC division seeking a reliable, high-performance foundation, or a home defender aiming for a compact, effective firearm. For anyone serious about constructing a robust and versatile 9mm AR platform that seamlessly integrates with widely available Glock® magazines, the Angstadt Arms 0940 Lower Receiver Set stands out as a premier choice. This meticulously engineered set, available at DEGuns, is designed to solve common challenges in 9mm AR builds, offering superior compatibility, enhanced ergonomics, and unwavering reliability right out of the box.

The Angstadt Arms 0940 Lower Receiver Set provides the essential components for a professional-grade 9mm AR-15, eliminating the guesswork and frustration often associated with piecing together a PCC. It's the ideal starting point for a dedicated 9mm carbine, offering a significant upgrade over generic or modified lowers. What makes this set so compelling is its dedicated design from the ground up for 9mm Luger, ensuring optimal function and feeding with Glock® pistol magazines – a crucial feature for many builders due to their widespread availability and proven reliability.

Precision Engineering: The Foundation of a Superior 9mm AR

At the core of the Angstadt Arms 0940 Lower Receiver Set is its robust construction from 7075-T6 billet aluminum. This specific aluminum alloy is renowned in the aerospace and defense industries for its exceptional strength-to-weight ratio and resistance to fatigue. Unlike less durable cast or forged alternatives, billet machining allows for tighter tolerances and a more uniform material structure, leading to a stronger, more reliable foundation for your firearm. This choice of material signifies Angstadt Arms' commitment to quality and longevity, ensuring your 9mm AR build can withstand rigorous use, whether at the range, in competition, or for defensive purposes.

Complementing the premium material is the matte black hardcoat anodized finish. This isn't just for aesthetics; hardcoat anodizing is an electrochemical process that creates a thick, durable, and corrosion-resistant layer on the aluminum surface. This protective layer significantly enhances the lower receiver's resistance to scratches, abrasions, and environmental elements like moisture and chemicals, ensuring it maintains its pristine appearance and structural integrity even under harsh conditions. For those who frequently train or operate in varied environments, this finish provides a crucial layer of protection, extending the lifespan and maintaining the performance of your firearm.

Key Features Designed for Optimal 9mm Performance

The Angstadt Arms 0940 Lower Receiver is packed with features specifically engineered to optimize the 9mm AR experience:

• Flared Magazine Well: One of the most immediately noticeable and beneficial features is the generously flared magazine well. This design element is critical for rapid and intuitive magazine changes, especially under stress or during competitive shooting. The wider opening guides the Glock® magazine smoothly into place, reducing fumbling and ensuring positive lock-up, ultimately shaving precious seconds off reload times. This feature is a game-changer for speed and efficiency.
• Oversized Trigger Guard: The integrated oversized trigger guard provides ample space for shooters, even when wearing gloves. This is a significant ergonomic improvement, enhancing comfort and accessibility in all weather conditions or tactical scenarios. It allows for a more natural hand position and reduces the risk of accidental discharge due to cramped finger space.
• Last Round Bolt Hold Open (LRBHO): A critical feature for any modern semi-automatic firearm, the Angstadt Arms 0940 Lower Receiver incorporates a true last round bolt hold open mechanism. This means that after the last round is fired, the bolt will lock to the rear, providing immediate feedback to the shooter that the magazine is empty. This not only speeds up reloads by eliminating the need to cycle the charging handle after inserting a new magazine but also serves as a vital safety indicator. For competitive shooters, this feature is non-negotiable for maintaining pace and efficiency on a stage.
• Glock Magazine Compatibility: This is arguably the most compelling feature for many builders. The 0940 lower is specifically designed to work flawlessly with Glock® 9mm magazines, including standard capacity and extended stick magazines. The ubiquity and affordability of Glock® magazines make this an incredibly attractive proposition, allowing users to leverage their existing pistol magazine collection or easily acquire new ones without proprietary magazine limitations. This compatibility ensures reliable feeding and broadens the options for magazine capacity.
• Mil-Spec Upper Receiver Compatibility: While optimized for 9mm, the Angstadt Arms 0940 Lower Receiver maintains compatibility with standard mil-spec AR-15 upper receivers. This allows for flexibility in your build, enabling you to pair it with a wide array of existing or newly acquired mil-spec upper components. However, it's crucial to note that the included upper receiver in this set is specifically designed for 9mm operation.

The Included Upper Receiver: Optimized for 9mm

The Angstadt Arms 0940 Lower Receiver Set is a complete package, including an upper receiver tailored for 9mm Luger. This dedicated upper receiver features:

• Appropriately Sized Ejection Port: Unlike a standard AR-15 upper, which has a larger ejection port designed for .223/5.56 casings, the 9mm upper included in this set features a port precisely sized for 9mm Luger casings. This ensures reliable ejection and contributes to a cleaner, more efficient operation specific to the smaller pistol caliber.
• Absence of Forward Assist or Dust Cover: Recognizing that these components are typically unnecessary for 9mm blowback operating systems, the Angstadt Arms 9mm upper receiver wisely omits them. This streamlines the design, reduces weight, and removes potential points of failure or unnecessary complexity for a dedicated 9mm build. This minimalist approach is a testament to the intelligent design behind this set, focusing on what truly matters for peak 9mm performance.

Who Is This Product For?

The Angstadt Arms 0940 Lower Receiver Set is perfect for:

• DIY AR-15 Builders: If you enjoy customizing your firearms and want to build a dedicated 9mm PCC from the ground up, this set provides a high-quality, reliable foundation.
• Pistol Caliber Carbine (PCC) Enthusiasts: For those who appreciate the benefits of a carbine firing pistol ammunition—less recoil, shared magazines with popular pistols, and suitability for shorter ranges—this set is an ideal starting point.
• Competitive Shooters (USPSA PCC, Steel Challenge): The flared magwell, LRBHO, and robust construction make this a top contender for building a competition-ready firearm that ensures fast reloads and dependable performance under pressure.
• Home Defense firearm owners: A 9mm PCC offers excellent maneuverability in confined spaces, reduced over-penetration risks compared to rifle calibers, and manageable recoil, making it a strong candidate for home protection.
• Shooters Seeking Cost-Effective Training: Pairing a 9mm AR with common pistol ammunition can make range training more affordable and accessible, especially when sharing magazines with a Glock® pistol.

Why Choose a 9mm AR-15?

Building an AR-15 chambered in 9mm Luger offers several distinct advantages over traditional rifle calibers:

• Reduced Recoil: 9mm ammunition produces significantly less recoil than 5.56 NATO/.223 Rem, making for a more comfortable shooting experience, faster follow-up shots, and easier training for new shooters.
• Cost-Effective Ammunition: 9mm ammunition is generally more affordable and readily available than rifle cartridges, reducing the cost of range training and plinking.
• Shared Magazine Compatibility: As highlighted by the Angstadt Arms 0940 lower, the ability to use Glock® pistol magazines means seamless transitions between your pistol and carbine, and less clutter in your gear bag.
• Versatility: 9mm PCCs excel in close-quarters environments, making them ideal for indoor ranges where rifle cartridges may be restricted, or for home defense scenarios.
• Maneuverability: Often built with shorter barrels, 9mm ARs are more compact and easier to maneuver in tight spaces, offering advantages in specific shooting applications.

Building Your Dream 9mm AR: A Step-by-Step Foundation

Starting with the Angstadt Arms 0940 Lower Receiver Set simplifies the building process for a 9mm AR. Once you have this robust foundation, you'll need to select your other components to complete your rifle:

1. Barrel and Handguard: Choose a 9mm barrel length that suits your needs, typically between 4 and 16 inches. Pair it with a compatible handguard.
2. Bolt Carrier Group (BCG): A dedicated 9mm blowback BCG is essential for proper function. Many are designed to work seamlessly with Glock® magazines.
3. Buffer and Spring: 9mm ARs often require a heavier buffer and specific spring to manage the blowback operation effectively and ensure reliable cycling.
4. Lower Parts Kit (LPK): A standard AR-15 LPK will be mostly compatible, though you won't need the bolt catch components related to rifle calibers as the 0940 lower has its own 9mm-specific LRBHO.
5. Stock/Brace and Grip: Personalize your build with your preferred stock or pistol brace, and an ergonomic pistol grip.
6. Sights/Optics: Complete your build with iron sights or an optic of your choice.

By selecting the Angstadt Arms 0940 Lower Receiver Set, you are starting with a proven, purpose-built component that significantly contributes to the reliability and performance of your final 9mm AR platform. This means less troubleshooting during your build and more time enjoying your finished firearm.

Trust in Angstadt Arms: A Brand Built on Quality

Angstadt Arms has established itself as a reputable name in the firearm industry, particularly known for its high-quality Pistol Caliber Carbine components and complete firearms. Their commitment to precision machining, innovative design, and rigorous testing ensures that products like the 0940 Lower Receiver Set meet the highest standards of performance and durability. When you choose Angstadt Arms, you're investing in a product from a brand that understands the unique demands of the 9mm AR platform and delivers solutions that exceed expectations. The design philosophy behind the 0940 set reflects a deep understanding of what shooters need: reliability, compatibility, and superior ergonomics.

This Angstadt Arms 0940 Lower Receiver Set, readily available through DEGuns, represents an excellent investment for anyone serious about building a high-performance 9mm AR. Its thoughtful design, premium materials, and dedicated 9mm features make it a standout choice for a wide range of applications, from competitive shooting to home defense. Enhance your next build with a foundation that promises reliability and superior function.

Technical Specifications: Angstadt Arms AA0940RSBA 0940 Lower Receiver Set

Feature	Detail
Brand	Angstadt Arms
Model	0940
Caliber	9mm Luger
Platform	AR-Style / AR-15
Material	7075-T6 Billet Aluminum
Finish	Black Hardcoat Anodized
Magazine Compatibility	Glock Magazines
Special Features (Lower)	Flared Magwell, Oversized Trigger Guard, Last Round Bolt Hold Open
Special Features (Upper)	Appropriately Sized Ejection Port, No Forward Assist, No Dust Cover
Trigger	None (requires separate LPK)
Weight	16.50 oz
SKU	AA0940RSBA
UPC	867114000100