First Impressions of Aero Precision M4E1-T 20in .350 Legend Complete Upper with Flash Hider
The Aero Precision M4E1-T 20in .350 Legend Complete Upper with Flash Hider promises AR-15 platform compatibility with the straight-walled .350 Legend cartridge, opening doors to hunting in areas where bottlenecked cartridges are restricted. This is a big deal for hunters like myself who want AR-15 modularity without sacrificing legal hunting opportunities. With Aero Precision’s reputation for quality and the .350 Legend’s growing popularity, this upper seemed like a perfect match.
For years, I’ve relied on bolt-action rifles for deer hunting in the Midwest due to state regulations. The appeal of the Aero Precision upper was the ability to use my existing AR-15 lower receiver, giving me faster follow-up shots and AR ergonomics in a hunting-legal package. The 20-inch barrel also suggested optimal ballistic performance for the .350 Legend round, something I was definitely looking for.
Upon unboxing, the first thing I noticed was the fit and finish; the anodizing was consistent, and the handguard was securely mounted. The weight felt balanced, hinting at a well-engineered system. The M4E1 upper receiver design is aesthetically pleasing, offering a “billet look”.
Compared to a similar Bear Creek Arsenal .350 Legend upper I had previously tried, the Aero Precision showed immediately superior machining and overall quality. I also considered a CMMG Banshee in .350 Legend, but wanted the longer barrel and traditional AR-15 ergonomics for a dedicated hunting build. I picked the Aero Precision due to its build quality reputation, handguard design, and promises of consistent accuracy.
My initial impression was one of excitement; this upper seemed like it would deliver on its promise of AR-15 performance and .350 Legend capabilities for hunting. The build quality inspires confidence, and I was eager to get it to the range and into the field.
Real-World Testing: Putting Aero Precision M4E1-T 20in .350 Legend Complete Upper with Flash Hider to the Test
First Use Experience
I tested the Aero Precision M4E1-T 20in .350 Legend Complete Upper with Flash Hider at my local shooting range, primarily using Winchester Deer Season XP 150-grain ammunition. The weather was typical for early fall in my area: overcast with a slight drizzle and temperatures around 50 degrees Fahrenheit. The range offered both 100-yard and 200-yard target distances.
From the first shot, the rifle cycled smoothly with minimal felt recoil. I immediately noticed how much quieter this upper was compared to my 5.56 AR. The accuracy was impressive right out of the box; I was able to achieve sub-MOA groups at 100 yards after a quick sight-in with a 3-9×40 scope.
There were no initial issues; the upper functioned flawlessly. The only surprise was how clean the rifle stayed after several magazines, indicating efficient powder burn of the .350 Legend cartridge.
Extended Use & Reliability
After several months of use, including multiple range sessions and a deer hunting season, the Aero Precision upper has held up remarkably well. There are no noticeable signs of wear and tear, even after being exposed to the elements during hunts. The finish remains intact, and all components are still functioning as they should.
Cleaning and maintenance have been incredibly easy. Standard AR-15 cleaning procedures apply, and the .350 Legend cartridge seems to produce less fouling than other AR calibers I’ve used. A quick wipe-down and bore cleaning after each use has kept the upper in top condition.
Compared to my previous experience with the Bear Creek Arsenal .350 Legend upper, this Aero Precision upper is a night-and-day difference. The Aero Precision is far more accurate, reliable, and durable. It has significantly exceeded my expectations.
Breaking Down the Features of Aero Precision M4E1-T 20in .350 Legend Complete Upper with Flash Hider
Specifications
- Caliber: .350 Legend. This straight-walled cartridge offers excellent ballistics for medium game hunting within 250 yards and is legal in many states with restrictions on bottleneck cartridges.
- Overall Length: 30 inches. This provides a comfortable length of pull and good balance.
- Barrel Length: 20 inches. This length maximizes the ballistic potential of the .350 Legend cartridge, providing optimal velocity and energy.
- Barrel Profile: DMR. The DMR profile balances weight and rigidity, contributing to accuracy.
- Gas System Length: Carbine Length. Carbine length gas systems provide reliable cycling in the AR-15 platform.
- Barrel Twist Rate: 1-16. This twist rate is optimized for stabilizing typical .350 Legend bullet weights.
- Threads per Inch: 1/2×28. This is a standard thread pitch for .22 caliber rifles and allows for the use of many common muzzle devices.
- Handguard Type: Free-Float. This improves accuracy by preventing pressure on the barrel.
- Muzzle Device: A2 Flash Hider. A basic but effective device for reducing muzzle flash.
- Gun Model: M4, AR-15. Compatible with any mil-spec AR-15 lower receiver.
- Condition: New.
- Fabric/Material: 7075-T6 Aluminum. This high-strength aluminum alloy is used for the upper receiver and handguard, providing durability and lightweight.
- Gas Block Journal Size-Diameter: .075 in.
- Handguard Length: 15 in. Provides ample space for mounting accessories.
- Handguard Style: Hybrid Rail. Combines Picatinny rail sections with M-LOK slots for versatile accessory mounting.
- Gun Rail: Picatinny. A continuous Picatinny rail runs along the top of the upper receiver and handguard for mounting optics and other accessories.
- Gun Type: Rifle.
- Gun Make: Aero Precision.
- Included Accessories: None. Bolt carrier group and charging handle are not included and must be purchased separately.
- Barrel Material: 416R Stainless Steel. This high-quality stainless steel provides excellent corrosion resistance and accuracy.
- Bolt Carrier Group Included: No.
- Charging Handle Included: No.
- Weight: 70 oz, 4 lb. A manageable weight for a 20-inch barreled upper.
- Magazine Included: No.
- Mount Type: M-LOK. Allows for direct attachment of M-LOK compatible accessories to the handguard.
- Country of Origin: USA.
These specifications combine to create a high-performance and versatile upper receiver. The 20-inch barrel and optimized twist rate ensure that the .350 Legend round performs to its full potential. The M-LOK handguard provides plenty of options for customization, and the overall build quality ensures reliability and durability.
Performance & Functionality
The Aero Precision M4E1-T 20in .350 Legend Complete Upper with Flash Hider performs exceptionally well in its intended role. The accuracy is outstanding, consistently producing sub-MOA groups with quality ammunition. The gas system is well-tuned, resulting in reliable cycling and manageable recoil.
The strengths of this upper lie in its accuracy, reliability, and modularity. The only area for potential improvement might be the inclusion of a higher-end muzzle device, but the A2 flash hider is functional. It has exceeded my expectations for an AR-15 upper in this caliber.
Design & Ergonomics
The build quality is excellent; the materials used are top-notch, and the fit and finish are impeccable. The weight is well-balanced, making the rifle comfortable to carry and shoot. The handguard is slim and ergonomic, providing a comfortable grip.
The upper is easy to use, with no significant learning curve. It is compatible with any standard AR-15 lower receiver, making it a straightforward upgrade or build option.
Durability & Maintenance
Based on my experience, this upper is built to last. The 416R stainless steel barrel and 7075-T6 aluminum receiver and handguard are durable and corrosion-resistant. Maintenance is simple and straightforward, requiring only standard AR-15 cleaning procedures.
Accessories and Customization Options
The Aero Precision M4E1-T 20in .350 Legend Complete Upper with Flash Hider is highly customizable. The Picatinny rail allows for the easy mounting of optics, and the M-LOK handguard provides ample space for attaching accessories such as lights, lasers, and forward grips. It is compatible with most standard AR-15 accessories, including magazines and triggers.
Pros and Cons of Aero Precision M4E1-T 20in .350 Legend Complete Upper with Flash Hider
Pros
- Exceptional Accuracy: Consistently delivers sub-MOA groups with quality ammunition, making it ideal for hunting and precision shooting.
- Reliable Cycling: The well-tuned gas system ensures smooth and consistent operation with a variety of .350 Legend ammunition.
- High-Quality Construction: Built with durable materials and excellent fit and finish, ensuring long-lasting performance.
- Versatile M-LOK Handguard: Provides ample space for mounting accessories, allowing for customization to suit individual needs.
- AR-15 Compatibility: Seamlessly integrates with any mil-spec AR-15 lower receiver, making it an easy and effective upgrade.
Cons
- Bolt Carrier Group and Charging Handle Not Included: Requires additional purchase, increasing the overall cost.
- Basic Muzzle Device: The A2 flash hider is functional but could be upgraded for improved performance.
Who Should Buy Aero Precision M4E1-T 20in .350 Legend Complete Upper with Flash Hider?
This upper is perfect for hunters who need a straight-walled cartridge for legal hunting in specific jurisdictions while wanting the AR-15 platform. It’s also ideal for shooters looking for a versatile and accurate AR-15 build for target shooting or home defense. The Aero Precision M4E1-T 20in .350 Legend Complete Upper with Flash Hider provides a high-quality and reliable platform for the .350 Legend cartridge.
Someone should skip this product if they are on a very tight budget and need a complete upper, ready to fire, out of the box. Because the bolt carrier group and charging handle are not included, the price will be higher. Also, if they are prioritizing maneuverability above all else, the 20-inch barrel may be too long.
Must-have accessories or modifications would include a quality bolt carrier group and charging handle, along with an optic suitable for the intended use (hunting or target shooting). A sling is also recommended for carrying the rifle in the field.
Conclusion on Aero Precision M4E1-T 20in .350 Legend Complete Upper with Flash Hider
The Aero Precision M4E1-T 20in .350 Legend Complete Upper with Flash Hider is a top-tier AR-15 upper that delivers exceptional accuracy, reliability, and versatility. The price is justified by the high-quality construction and excellent performance. This is definitely an upper that I would recommend to anyone looking to build a .350 Legend AR-15.
If you’re looking for a high-quality, accurate, and reliable .350 Legend upper for your AR-15, look no further than the Aero Precision M4E1-T 20in .350 Legend Complete Upper with Flash Hider. Invest in quality, and you won’t be disappointed!