Unlocking Precision: The Aero Precision M5 .308 Standard Lower Parts Kit (APRH100160)

For dedicated firearm enthusiasts, custom builders, and those seeking to upgrade or complete their AR-10 platform, the journey to a high-performance rifle begins with a solid foundation. The Aero Precision M5 .308 Standard Lower Parts Kit (LPK), SKU: APRH100160, offers a comprehensive and meticulously engineered solution designed to empower you to construct a robust and reliable .308 AR lower receiver from the ground up. This kit is a cornerstone for anyone building an M5 platform rifle chambered in .308 Winchester, ensuring every critical component meets exacting Mil-spec standards for optimal fit, function, and enduring performance.

Who is this Kit For?

Are you a first-time AR-10 builder looking for a reliable, all-inclusive starting point? Perhaps an experienced gunsmith who values quality components and seamless integration? Or maybe an owner of an Aero Precision M5 lower receiver eager to complete your project with parts guaranteed to fit? This Aero Precision LPK is specifically tailored for:

• New AR-10 Builders: Provides all the essential internal components, simplifying the parts acquisition process.
• Custom Rifle Enthusiasts: Offers a high-quality foundation for a personalized .308 build, allowing for future upgrades to specific components like triggers.
• Upgraders and Repairers: Ideal for replacing worn-out parts or ensuring every component in your M5 .308 lower is up to Mil-spec standards.
• Aero Precision M5 Platform Owners: Ensures perfect compatibility and functionality with your existing M5 lower receiver, eliminating guesswork and potential fitment issues.

What Problem Does This Kit Solve?

Building an AR-style rifle, especially one chambered in .308 Winchester, requires precision and compatibility across numerous small parts. Sourcing each component individually can be time-consuming, expensive, and introduce the risk of incompatible parts. The Aero Precision M5 .308 Standard Lower Parts Kit solves this by:

• Ensuring Compatibility: All components are designed to Mil-spec dimensions, guaranteeing correct interface with any Mil-spec lower receiver, particularly the Aero Precision M5 platform.
• Saving Time & Effort: Bundles all necessary small parts into one convenient package, eliminating the need to search for individual springs, detents, and pins.
• Providing Reliability: Each part is manufactured to Aero Precision's renowned quality standards, ensuring smooth operation and long-term durability.
• Simplifying Assembly: With all components readily available and designed for precise fit, assembly becomes a more straightforward and enjoyable process.

Key Components and Their Critical Role in Your .308 Build

The Aero Precision M5 .308 Standard Lower Parts Kit is more than just a collection of parts; it's a meticulously curated set of components, each playing a vital role in the functionality, safety, and ergonomics of your .308 AR-style rifle. Understanding what each part does helps underscore the value and completeness of this kit.

1. Takedown/Pivot Spring and Takedown/Pivot Detent: These small but crucial parts are responsible for retaining the front pivot pin and rear takedown pin in your lower receiver. They allow for easy field stripping and reassembly of the rifle, making cleaning and maintenance a breeze while ensuring the upper and lower receivers remain securely joined during operation.
2. Trigger/Hammer Pin: These robust pins secure the trigger and hammer assemblies within the lower receiver. Precision manufacturing ensures a snug fit, preventing wobble and contributing to consistent trigger pull.
3. M5 .308 Takedown and Pivot Pin: These larger, purpose-built pins are designed specifically for the M5 .308 platform. They connect the upper and lower receivers, providing the structural integrity needed for the more powerful .308 Winchester cartridge. Their precise dimensions ensure a tight fit with minimal play, enhancing accuracy and overall feel.
4. M5 .308 Bolt Catch/Spring, Buffer, and Roll Pin: The bolt catch is essential for holding the bolt open, facilitating magazine changes and clearing malfunctions. The spring and buffer (for the bolt catch, not the main buffer) ensure proper engagement and disengagement. The roll pin secures the bolt catch to the receiver. This entire sub-assembly is vital for reliable cycling of the action.
5. Safety Selector/Spring and Detent: The safety selector is a fundamental safety mechanism, allowing the user to switch between "Safe" and "Fire" modes. The spring and detent provide the necessary tension for positive engagement and a crisp, reliable click when operated. The inclusion of a standard safety selector switch ensures ease of use and immediate safety control.
6. Buffer Retainer and Spring: This small pin and spring secure the buffer in the buffer tube when the upper receiver is removed, preventing the buffer and buffer spring from launching out. It's a small convenience that makes assembling and disassembling the rifle much smoother.
7. Trigger Guard and Roll Pin: The trigger guard protects the trigger from accidental discharge and provides space for the shooter's finger. The roll pin securely fastens it to the lower receiver. This kit includes a standard trigger guard, known for its durability and widely accepted ergonomics.
8. A2 Pistol Grip/Screw and Lock Washer: The A2 pistol grip is a classic, widely recognized ergonomic design. Its finger groove and checkered texture offer a comfortable and secure hold, promoting better control and handling of the rifle. The included screw and lock washer ensure the grip is firmly attached to the lower receiver, providing a stable platform for shooting.
9. Hammer and Disconnector Spring: These springs are integral to the fire control group. The hammer spring provides the force for the hammer to strike the firing pin, while the disconnector spring ensures proper disengagement of the disconnector after each shot, allowing for semi-automatic fire.
10. Magazine Catch Body/Spring and Button: This assembly is responsible for securely holding the magazine in place and allowing for its quick release. A reliable magazine catch is paramount for efficient reloads and consistent feeding.
11. Hammer, Trigger and a Disconnector: These are the core components of the fire control group. The kit includes a standard trigger and hammer, providing a consistent and predictable trigger pull that is reliable and suitable for a wide range of shooting applications. The disconnector ensures that the hammer does not follow the bolt forward, allowing for single-shot operation in semi-automatic mode. This complete assembly is the heart of your rifle's firing mechanism.

Optimized for the M5 Platform: What Does Mil-Spec Mean for You?

One of the standout features of the Aero Precision APRH100160 kit is its adherence to Mil-spec dimensions and coating. "Mil-spec" refers to military specifications, indicating that the components are manufactured to precise standards set for military-grade equipment. For you, the builder or shooter, this translates directly into:

• Guaranteed Fit: No more struggling with ill-fitting parts or worrying about compatibility. Mil-spec ensures that each component will seamlessly integrate with your Aero Precision M5 lower receiver and other Mil-spec compliant parts.
• Enhanced Reliability: Parts manufactured to Mil-spec often undergo rigorous testing and adhere to strict material quality guidelines, contributing to a longer lifespan and consistent performance under various conditions.
• Durability: The coatings and materials used are designed to resist corrosion, wear, and tear, even in demanding environments, ensuring your rifle remains functional and aesthetically pleasing for years to come.
• Interchangeability: If you ever need to replace a part, you can be confident that any other Mil-spec compliant component will fit, offering flexibility and ease of maintenance.

Building Your .308 Dream Rifle with Confidence

When embarking on a .308 AR build, precision and quality are paramount. The Aero Precision M5 .308 Standard Lower Parts Kit, APRH100160, provides an unbeatable foundation. Whether you are assembling a precision long-range rifle, a versatile hunting rig, or a robust defensive firearm, this kit offers the fundamental components you need with the assurance of Aero Precision's commitment to excellence.

Consider the practical advantages:

• Comprehensive Solution: No missing pieces. Every small spring, detent, and pin critical to the lower receiver's function is included.
• Trusted Brand: Aero Precision is synonymous with high-quality AR components, known for their precision machining and rigorous quality control. Choosing this kit means choosing a reputable and reliable option.
• Cost-Effective: Purchasing a complete LPK is often more economical than buying individual components, especially when considering the shipping costs and time associated with piecemeal acquisition.
• Consistent Performance: The unified manufacturing and quality control standards of Aero Precision ensure that all parts work together harmoniously, contributing to a smoother operating rifle.

This kit, with its black finish and classic A2 pistol grip, not only provides the mechanical integrity needed for a high-performance .308 AR but also contributes to the timeless aesthetic of the platform. Its relatively light weight of 8.10 oz for the entire kit further emphasizes Aero Precision's engineering efficiency without compromising strength or function.

In summary, for anyone looking to complete, repair, or embark on a new .308 AR-style rifle build on the M5 platform, the Aero Precision M5 .308 Standard Lower Parts Kit (UPC: 815421020847) is an intelligent investment. It delivers Mil-spec reliability, comprehensive components, and the peace of mind that comes from using a trusted industry leader. Find this essential kit and more high-quality firearm components available at DEGuns.com.

Product Specifications Overview

Attribute	Detail
Brand	Aero Precision
Category	Lower Kits
Model	Standard
Caliber	.308 Win
Firearm Fit	M5 Platform
Color	Black
Size	Mil-Spec
Grips	Black A2 Pistol
Safety	Safety Selector Switch
Trigger	Standard Trigger
Weight	8.10 oz
SKU	APRH100160
UPC	815421020847