The Ultimate Foundation for Your Big-Bore AR Build: Aero Precision M5 Complete Lower Receiver with PRS Gen3 Stock

Are you embarking on the journey of building a powerful, precise, and reliable AR-style rifle chambered in .308 Winchester or 7.62x51mm NATO? Do you seek the absolute best starting point for a custom long-range precision rifle, a robust hunting firearm, or a dependable tactical platform? Look no further. The Aero Precision M5 Complete Lower Receiver, featuring the highly acclaimed Magpul PRS Gen3 Precision Stock, is meticulously engineered to provide the unwavering stability and advanced functionality serious builders demand. This complete lower receiver package from Aero Precision stands out as a premier choice for anyone aiming to construct a high-performance big-bore AR, eliminating guesswork and ensuring compatibility right from the start.

Why Choose the Aero Precision M5 Complete Lower? The Core of Your High-Performance AR-10

For many firearms enthusiasts and professional builders, the lower receiver is more than just a serialized part; it's the very heart and soul of the rifle. It dictates ergonomics, interface with critical components, and profoundly impacts the overall feel and function of the finished firearm. The Aero Precision M5 Complete Lower Receiver addresses common challenges faced by AR-10 builders, offering a comprehensive solution that combines innovative design with robust construction.

One of the primary problems this product solves is the search for a truly complete and optimized lower receiver package that's ready to integrate into your build with minimal hassle. Instead of sourcing individual parts and hoping for perfect compatibility, the Aero Precision M5 Complete Lower provides a cohesive system, including a high-quality lower, a premium stock, a reliable grip, and all necessary internal components. This simplifies the building process significantly, allowing you to focus on selecting the ideal upper receiver, barrel, and optics to match your specific shooting discipline.

Whether you're a competitive long-range shooter aiming for sub-MOA groups, a hunter needing a powerful and accurate rifle for medium to large game, or a tactical operator requiring a dependable platform for demanding scenarios, the M5 Complete Lower serves as an unparalleled foundation. It’s designed for individuals who value precision, durability, and thoughtful engineering in their firearms.

Engineered for Excellence: Advanced Features of the Aero Precision M5 Lower

Aero Precision is renowned for its commitment to quality and innovation, and the M5 lower receiver exemplifies this ethos with a suite of upgraded features that elevate it above standard offerings:

• Threaded Bolt Catch Roll Pin: This seemingly small detail offers a significant improvement in assembly. Instead of struggling with a traditional roll pin that requires hammering and can easily mar the finish of the receiver, the M5 utilizes a threaded pin. This design allows for easier, tool-less installation and removal of the bolt catch, protecting the receiver's surface and simplifying maintenance or upgrades. It's a testament to Aero Precision's understanding of the builder's experience.
• Integrated Trigger Guard: Unlike many lowers that require a separate, aftermarket trigger guard, the M5 features an integrated design. This means no more fiddly roll pins for installation, a stronger overall structure around the trigger area, and enhanced aesthetics. The integrated design also provides more clearance for gloved hands, which is a crucial ergonomic benefit for tactical or cold-weather shooting applications.
• Upper Tension Screw: This ingenious feature is a game-changer for enhancing accuracy and eliminating "wobble" between the upper and lower receivers. A small nylon-tipped screw located in the grip tang of the lower receiver allows the user to apply pressure to the rear lug of the upper receiver. This tension eliminates any play or slop, creating a tighter, more precise fit that can contribute to improved shot consistency and a more premium feel.
• Threaded Takedown Pin Detent Recess: Similar to the threaded bolt catch pin, this feature simplifies the installation of the takedown pin and pivot pin detents and springs. Instead of wrestling with tiny springs and detents that are prone to launching across the room, a threaded hole ensures secure retention, making field stripping and assembly much less frustrating. This small detail greatly improves the overall user experience during maintenance or component swaps.
• Increased Magwell Flare: Speed and reliability are paramount in dynamic shooting situations. The M5's enhanced magazine well flare provides a wider, more forgiving opening for magazine insertion. This "funnel" effect dramatically aids in faster and more consistent magazine changes, even under stress or in low-light conditions, helping to shave precious seconds off your reload times.

These thoughtful enhancements demonstrate Aero Precision's dedication to providing a superior building experience and a more robust, user-friendly end product.

The Power of the Package: Included Components Explained

This complete lower receiver package doesn't just give you a stripped lower; it provides a comprehensive set of high-quality components designed to work seamlessly together:

1. Aero Precision M5 Lower Receiver: The star of the show, this Mil-Spec compatible receiver is machined from 7075-T6 aluminum, known for its exceptional strength-to-weight ratio. Its hardcoat anodized finish provides superior corrosion resistance and durability, ensuring your rifle withstands the rigors of extensive use and harsh environments. This receiver forms the unwavering backbone of your large-frame AR.
2. Magpul PRS Gen3 Precision Stock: For builders focused on precision, stability, and extreme adjustability, the Magpul PRS Gen3 is the quintessential choice. This stock is specifically designed for semi-automatic sniper or varmint rifles.
   • Unparalleled Adjustability: The PRS Gen3 offers tool-less adjustments for both length of pull (LOP) and comb height (cheek weld). This allows every shooter, regardless of body type or shooting position, to achieve a perfect, repeatable fit, crucial for consistent sight picture and recoil management.
   • Solid Lock-Up: Once adjusted, the positive detents and robust construction ensure the stock remains firmly in place, eliminating any movement that could compromise accuracy.
   • Enhanced Stability: Its robust design provides a solid platform for bag riding or monopod use, making it ideal for precision shooting from prone or benchrest positions.
   • Versatile Mounting Options: Features include multiple sling attachment points (QD sockets, loop sling mount), and a forward M-LOK slot for attaching accessories like monopods.
3. Magpul MOE Grip: The Magpul MOE (Magpul Original Equipment) Grip is a widely acclaimed and highly ergonomic pistol grip.
   • Comfort and Control: Its anti-slip texturing and optimized angle provide a secure and comfortable hold, even during extended shooting sessions or in adverse conditions.
   • Integrated Storage: A core feature of MOE grips is the internal storage compartment, perfect for small spare parts, batteries, or a cleaning kit.
   • Durability: Constructed from high-strength polymer, the MOE Grip is built to withstand rigorous use.
4. Lower Parts Kit (LPK): This comprehensive kit includes all the small springs, pins, detents, and components necessary to complete your lower receiver. Sourced for quality and reliability, this LPK ensures all internal mechanisms function smoothly and reliably, simplifying your build process.
5. Receiver Extension (Buffer Tube): A high-quality Mil-Spec receiver extension provides the essential housing for the buffer and spring assembly. Its robust construction ensures proper function and durability under the forces of recoil.
6. M5 Rifle Buffer and Spring: Specifically tuned for the .308 Winchester/7.62x51mm NATO cartridge, this buffer and spring combination is critical for reliable cycling and effective recoil management in the large-frame AR platform. Proper buffering is paramount for both rifle longevity and shooter comfort, making this component a vital inclusion in the complete package.

Building Your Dream Rifle: Applications and Compatibility

With the Aero Precision M5 Complete Lower Receiver as your foundation, the possibilities for your custom AR .308 rifle are extensive.

• Long-Range Precision Rifle: Pair this lower with a high-quality, free-floated upper receiver, a match-grade barrel (18-24 inches), a precision trigger, and a high-magnification optic. The PRS Gen3 stock provides the ideal platform for stable, repeatable shots out to significant distances, making it perfect for competitive shooting or extreme long-range target practice.
• Hunting Rifle: Configure it with a lighter, shorter barrel (16-18 inches) for maneuverability in the field, while still retaining the stopping power of the .308 cartridge. The M5's robust construction ensures reliability in challenging outdoor environments, and the ergonomic MOE grip provides excellent handling.
• Tactical/Duty Rifle: For those requiring a reliable and powerful semi-automatic platform, the M5 lower offers the durability and modularity needed for various tactical setups. Its compatibility with standard AR .308 components and magazines means a vast array of aftermarket accessories and parts can be utilized for customization.

Compatibility is Key: One of the most significant advantages of the Aero Precision M5 platform is its adherence to industry standards, ensuring broad compatibility with a wide range of AR .308 components and magazines. This means you won't be locked into proprietary parts, offering you maximum flexibility in choosing your upper receiver, barrel, handguard, and other accessories. Whether you prefer PMAGs or other AR-10 compatible magazines, this lower receiver is designed to accept them seamlessly.

The Value Proposition: Why Invest in the Aero Precision M5 Complete Lower?

Choosing the Aero Precision M5 Complete Lower Receiver is an investment in quality, performance, and peace of mind.

• Uncompromising Reliability: Aero Precision's reputation for stringent quality control and robust manufacturing processes ensures that every M5 lower is built to perform flawlessly under demanding conditions.
• Enhanced Accuracy Potential: Features like the upper tension screw and the stable Magpul PRS Gen3 stock directly contribute to the rifle's inherent accuracy potential, allowing shooters to achieve tighter groups.
• Simplified Building Process: As a complete package, it significantly reduces the complexity and potential pitfalls of sourcing individual components, making it ideal for both seasoned builders and those new to the AR-10 platform.
• Superior Ergonomics and Comfort: The integrated trigger guard, Magpul MOE grip, and highly adjustable PRS Gen3 stock provide an incredibly comfortable and controllable shooting experience, even with the recoil of the .308 cartridge.
• Long-Term Durability: Constructed from high-grade aluminum with a durable finish, this lower receiver is built to last for countless rounds and years of service.

For those asking, "What's the best lower receiver for a custom .308 build?" or "How can I ensure my AR-10 build is reliable and accurate?", the Aero Precision M5 Complete Lower Receiver with PRS Gen3 Stock provides a compelling and definitive answer. It’s an exceptional choice that sets the standard for large-frame AR foundations. Builders seeking this premium component, along with a wide selection of compatible parts and accessories, can find it readily available at DEGuns.com.

Technical Specifications

Feature	Detail
UPC	815421021707
SKU	APAR308022
Compatibility	Standard AR .308 components and magazines
Material	7075-T6 Aluminum
Finish	Hardcoat Anodized (Black)
Integrated Features	Threaded Bolt Catch, Integrated Trigger Guard, Upper Tension Screw, Threaded Takedown Pin Detent, Increased Magwell Flare
Included Stock	Magpul PRS Gen3 Precision Stock
Included Grip	Magpul MOE Grip
Included Components	Lower Parts Kit, Receiver Extension, M5 Rifle Buffer and Spring
Caliber Compatibility	.308 Winchester, 7.62x51mm NATO