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M5 (.308) ASSEMBLED UPPER RECEIVER /NO BARREL FOR AR .308 Reviews & Ratings

The M5 .308 Assembled Upper Receiver comes with both the port door and forward assist hardware preinstalled. Forged from 7075-T6 aluminum, this assembled upper is precision machined to accept standard .308 components and is the perfect upper for your big bore build. Match this with Aero's M5 .308 lower receiver for a solid and dependable fit.

FEATURES:

M4 Feedramps
.2795 takedown pin holes
Laser engraved T-marks
DPMS High Profile (.210) Tang)
Includes port door and forward assist

INCLUDES:

M5 .308 Assembled Upper Receiver

SPECS

Platform: M5
Material: Machined from 7075-T6 forged aluminum
Select Your Finish: Anodized Black
Compatibility: Accepts standard AR .308 components
Weight(s): 14 oz
Other: Barrel nut threads: 1 7/16"-16

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2 Stars

Reviews Summary

The M5 (.308) Upper Receiver impresses users with its quality and precision fit. Many praise its compatibility with various lowers and affordability, though some report issues with the ejection port cover and minor alignment problems. Overall, customers find it a strong choice for AR builds, especially when paired with Aero's other components.

What Reviewers Are Saying

Product Quality

70%

A strong consensus exists among reviewers regarding the exceptional quality of the Aero M5 upper receiver. Users frequently note excellent finish and precision fitment with various lowers, reinforcing Aero's reputation for reliable manufacturing. This theme was highlighted by 70% of reviewers.

Fit and Compatibility

65%

Reviewers emphasize the fit of the upper receiver, noting that it fits well with Aero lowers and others with slight adjustments. While most report a snug fit, some experienced minor alignment issues requiring filing. This aspect is crucial for users seeking compatibility with existing lowers. Discussed by 65% of reviewers.

Customer Satisfaction

60%

Overall satisfaction with the purchase is evident, as many reviewers mention their happiness with the product's performance and value for money. The reviews reflect a positive sentiment towards Aero as a brand. This theme resonated with 60% of reviewers.

Ejection Port Cover Issues

25%

Some customers reported difficulties with the ejection port cover, describing it as either too tight or malfunctioning. This feedback suggests that while the upper receiver is solid, there are aspects of design that could benefit from improvement. Affected 25% of reviewers.

Value for Money

55%

The affordability and value of the M5 upper receiver are frequently mentioned, with reviewers feeling that they got a high-quality product for a reasonable price. This theme illustrates a strong sense of value among purchasers, noted by 55% of reviewers.

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At 10 upper w/dust cover and forward assist installed

Perfect fit to the ar 10 lower receiver.

by CHARLES PARRAMORE on December 30, 2025

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Aero precision m5 upper receiver

I used this for a 6.5 creedmoor build to match my aero precision lower

Would you recommend this? Yes, I would recommend to a friend

by John Ball on February 07, 2025

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Competivie price, prompting shipping

This was the product I needed, at the right time, right price. Well packaged, prompt shipping. Have since followed up with other purchases.

Would you recommend this? Yes, I would recommend to a friend

by H MARK MACHA on November 12, 2024

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We will see

It comes highly rated and it fits the lower great we will see when things start going together.

Would you recommend this? Yes, I would recommend to a friend

by A DARRELL SKOUSEN on July 29, 2024

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Aero precision m5 upper

Very pleased with the quality of this upper, fits very good with the aero lower

by DWIGHT KELDERMAN on June 14, 2024

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Just what I needed

Love Aero’s quality!

by JOSHUA STEVENS on April 26, 2024

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Great product as usual

Aero continues to deliver great products at competitive prices, i was on of the first to buy their m5 relievers and they are flawless.

by JAMES SMITH on November 26, 2023

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Aero M5 Upper

The quality you have come to expect from Aero. By far the standard for any AR10 build.

by Kennith Kellogg on July 31, 2023

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Pairs well with a Quentin Defense QD-10.

Fits well with a Quentin Defense QD-10 lower. Nice and tight. No cons, as of yet.

Aero Precision M5 Build

Been looking for AR308 parts and Brownells is the only place you can find them in stock. Also anything from Aero is amazing as usual.