Aero Precision M5E1 20in .308 Barrel Complete Upper Receiver with Flash Hider Review

Let’s Dive into Aero Precision M5E1 20in .308 Barrel Complete Upper Receiver with Flash Hider

The Aero Precision M5E1 20in .308 Barrel Complete Upper Receiver with Flash Hider promises to deliver enhanced power and precision to your AR platform. This complete upper receiver combines Aero Precision’s renowned quality with the stopping power of the .308 Winchester cartridge.

My journey toward acquiring this upper receiver began with a desire for a long-range AR-style rifle capable of ethical hunting and precision shooting at extended distances. I was looking for a reliable, accurate, and customizable platform that could handle the demands of both the range and the field, and the Aero Precision M5E1 seemed to fit the bill perfectly.

Unboxing the Aero Precision M5E1 was an experience that immediately instilled confidence. The upper receiver felt solid and well-made, with a durable finish and meticulous attention to detail. The weight felt substantial, hinting at the rugged construction and potential for accuracy.

I considered other options like the Palmetto State Armory PA-10 and the DPMS LR-308, but I ultimately chose the Aero Precision M5E1 for its reputation for superior quality, enhanced handguard mounting system, and known compatibility with a wide range of aftermarket components. The integrated handguard mounting platform and the promise of enhanced accuracy sealed the deal.

My first impression was one of excitement and anticipation; this upper receiver appeared to be a significant upgrade, promising both enhanced performance and aesthetics for my AR build. I was eager to mate it to my lower and experience its capabilities firsthand.

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Real-World Testing: Putting Aero Precision M5E1 20in .308 Barrel Complete Upper Receiver with Flash Hider to the Test

First Use Experience

The initial test took place at my local shooting range, a controlled environment ideal for zeroing and evaluating accuracy. I mounted the Aero Precision M5E1 upper receiver onto my Aero Precision M5 lower and paired it with a quality optic.

Performance was impressive right from the start, with consistent groupings at 100 yards. The rifle-length gas system provided smooth and reliable cycling, and the recoil was manageable, even with heavier .308 loads.

Initially, there were no significant issues, though the A2 flash hider did little to mitigate muzzle flash when firing at dusk. I quickly became familiar with the platform and was impressed by its inherent accuracy and user-friendliness.

Extended Use & Reliability

After several months of regular use, the Aero Precision M5E1 upper receiver has proven to be exceptionally reliable and durable. The finish has held up well, showing minimal signs of wear despite exposure to various weather conditions.

Maintenance has been straightforward, with routine cleaning and lubrication being all that’s required to keep it running smoothly. The barrel cleans easily, and the overall design is conducive to simple disassembly and reassembly.

Compared to previous experiences with other AR platforms, the Aero Precision M5E1 has exceeded expectations in terms of both accuracy and reliability. It’s a high-quality upper receiver that inspires confidence in its performance and longevity.

Breaking Down the Features of Aero Precision M5E1 20in .308 Barrel Complete Upper Receiver with Flash Hider

Specifications

• The Aero Precision M5E1 20in .308 Barrel Complete Upper Receiver with Flash Hider is chambered in .308 Winchester, offering substantial stopping power. The .308 caliber is known for its versatility and effectiveness in both hunting and tactical applications.
• The overall length of the assembled upper receiver is approximately 30 inches, providing a stable platform for accurate shooting. This length contributes to improved sight radius and stability, especially when shooting offhand.
• The barrel is 20 inches long with an M4 profile and a heavy contour, balancing weight and rigidity. The 20-inch barrel optimizes the .308 cartridge’s ballistic potential, while the heavy profile enhances accuracy and heat dissipation.
• The gas system is rifle-length, promoting smooth and reliable cycling. The longer gas system reduces felt recoil and increases reliability, especially with a wide range of ammunition.
• The barrel features a 1-10 twist rate, suitable for stabilizing a wide range of .308 bullet weights. This twist rate is a versatile choice, capable of handling bullets from 150 to 175 grains effectively.
• The barrel threads are 5/8×24, a standard thread pattern for .308 caliber firearms. This allows for the use of a wide variety of muzzle devices, including suppressors and brakes.
• It comes with an A2 flash hider, reducing muzzle flash but providing minimal recoil mitigation. While functional, many users may opt to upgrade to a more effective muzzle device.
• The upper receiver and handguard are constructed from 7075-T6 aluminum for strength and weight savings. 7075-T6 aluminum is a durable and lightweight material ideal for firearm components.
• The gas block journal size is .750 inches, accommodating a wide range of aftermarket gas blocks. This standard size allows for easy customization and fine-tuning of the gas system.
• The handguard is 15 inches long with a round rail design, offering ample space for accessories. The M5E1 enhanced handguard provides a continuous top rail and M-LOK slots for versatile accessory mounting.
• The receiver features a Picatinny top rail for optics mounting. This allows for the easy attachment of scopes, red dots, and other aiming devices.
• The weight of the complete upper receiver is approximately 60 ounces, offering a balance between stability and maneuverability. This weight contributes to recoil absorption and overall shooting stability.
• It utilizes an M-LOK mounting system on the handguard for attaching accessories. M-LOK provides a secure and lightweight attachment method for rails, lights, and other accessories.
• The barrel is made from CMV steel, known for its durability and resistance to heat. CMV steel is a proven material for barrels, offering long-lasting performance and accuracy.

Performance & Functionality

The Aero Precision M5E1 20in .308 Barrel Complete Upper Receiver with Flash Hider performs exceptionally well, delivering consistent accuracy and reliable function. I’ve found that it’s capable of producing sub-MOA groups with quality ammunition.

The rifle-length gas system contributes to smooth cycling and reduces felt recoil, making it comfortable to shoot even during extended range sessions. The integrated handguard mounting platform provides a stable and rigid platform for optics and accessories.

While the included A2 flash hider is functional, it’s one area where an upgrade would be beneficial, especially for those shooting in low-light conditions. Overall, the upper receiver meets and exceeds my expectations for performance and functionality.

Design & Ergonomics

The build quality of the Aero Precision M5E1 is excellent, with tight tolerances and a durable finish. The weight is well-balanced, making it comfortable to handle and shoot.

The M5E1 enhanced handguard provides a comfortable and secure grip, and the continuous top rail allows for flexible optic placement. There is no significant learning curve; it is easy to set up and use.

Durability & Maintenance

The Aero Precision M5E1 is built to last, with high-quality materials and robust construction. The finish is resistant to scratches and wear, and the barrel is made from durable CMV steel.

Maintenance is simple, requiring only routine cleaning and lubrication to keep it running smoothly. The design is conducive to easy disassembly and reassembly, making it easy to maintain in the field.

Accessories and Customization Options

The Aero Precision M5E1 20in .308 Barrel Complete Upper Receiver with Flash Hider comes with an A2 flash hider. The M-LOK handguard allows for the attachment of various accessories such as grips, lights, and bipods.

It is compatible with a wide range of AR-10/SR-25 pattern magazines, triggers, and other aftermarket components. The upper receiver is also compatible with various optics, allowing users to tailor the rifle to their specific needs.

Pros and Cons of Aero Precision M5E1 20in .308 Barrel Complete Upper Receiver with Flash Hider

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Who Should Buy Aero Precision M5E1 20in .308 Barrel Complete Upper Receiver with Flash Hider?

The Aero Precision M5E1 20in .308 Barrel Complete Upper Receiver with Flash Hider is perfect for hunters seeking a reliable and accurate long-range rifle. It is also great for competitive shooters looking for a precision platform for long-range matches.

Anyone looking for a high-quality, customizable AR-10 style upper receiver will benefit. Those primarily interested in close-quarters combat or lightweight builds might find it less suitable.

Must-have accessories include a quality optic, bipod, and upgraded muzzle device (such as a brake or suppressor). A high-quality bolt carrier group and charging handle are also necessary to complete the build.

Conclusion on Aero Precision M5E1 20in .308 Barrel Complete Upper Receiver with Flash Hider

The Aero Precision M5E1 20in .308 Barrel Complete Upper Receiver with Flash Hider is a top-tier option for anyone building a precision AR-10 style rifle. Its combination of accuracy, reliability, and durability makes it a worthwhile investment.

The price is justified by the quality of materials, construction, and performance. I would highly recommend it to anyone seeking a high-performance upper receiver for their AR-10 build.

If you’re serious about long-range shooting or hunting with an AR platform, the Aero Precision M5E1 is an excellent choice. Upgrade your rifle today and experience the difference!