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Questions & Answers
Does this come with BCG? Manufacturer Answer

The Aero Precision BCG as well as the charging handle is not included and they will need to be purchased separately.

by Aero Precision USA, Manufacturer, July 26, 2022
can the DI tube and block be replaced with a piston system, like a KNS? can these uppers be matched with any AR10 80%? Manufacturer Answer

Please be advised that our .308 products are machined to AR .308 specs, which is similar but not the same as DPMS Gen 1. Unfortunately, because there is no set standard across the industry, we are unable to guarantee compatibility with any other manufacturer’s products within this platform.
Aero Precision M5 20in .308 SS Complete Upper Receiver w/ ATLAS S-ONE Handguard

by Aero Precision USA, Manufacturer, February 25, 2022
Customer Reviews
Most Recent Reviews
*Updated Review* by ArmySgt, Verified Owner, April 21, 2025
Took this out to the range and fired 3 different ammo types from 149 grain to 169 grain. Fired everything flawlessly and bolt locked back every time, I got 0.75 moa at 50 yrds with 169 grain. For reference, I have it on a aero lower with carbine le...
Read More...
Most Recent Reviews
Great product at great price by ArmySgt, Verified Owner, September 22, 2024
Building my 308 AR and was looking for an 18in upper. This was perfect, feels rock solid, and looking forward to my next range day once my BCG comes gets here.
Most Recent Reviews
m5 upper receiver by Rad dude, Verified Owner, September 18, 2024
Havent shot it yet looks really good. Fit right on lower good and tight.
Most Recent Reviews
Aero precision by Sir, Verified Owner, August 24, 2024
Took awhile it was out of stock but worth the wait. Great deal
Most Recent Reviews
Love Aero Precision for the past six years! Couldn’t beat the price and quality of Aero Products and thanks to Optics planet for the Phenomenal service! Will always do business with them! Products came quick!
Most Recent Reviews
Complete. 308 upper by Jon, March 30, 2024
Easy to install and everything works flawless like it should. Very pleased with it. Not sure why it takes two to three weeks to get it when they said it was in-stock.
Read All 6 Reviews
Caliber:
.308 Winchester
Barrel Length:
18 - 18.99 in
Barrel Twist Rate:
1-10
Muzzle Device:
Flash Hider
Finish:
Black Anodized
Color:
Black
Condition:
New

Code: 29D-URC-APAR308554M25

MPN: APAR308554M25

UPC: 815421020885

List: $690.00Save 27%
$505.99

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Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.

Product Info for Aero Precision M5E1 18in .308 Win/7.62x51mm NATO 4150 Chrome Moly V Complete Upper Receiver

Aero Precision APAR308554M25 M5E1 308 Win/7.62x51mm NATO 18" 4150 Chrome Moly V - This Complete Upper includes Aero Precision's Gen 2 Enhanced Handguard. Key features include the addition of quick disconnect sling sockets, enhanced milling design for grip and visual appeal and a profile for the picatinny top rail.image

Specifications for Aero Precision M5E1 18in .308 Win/7.62x51mm NATO 4150 Chrome Moly V Complete Upper Receiver:

Manufacturer: Aero Precision
Caliber: .308 Winchester
Barrel Length: 18 - 18.99 in
Barrel Twist Rate: 1-10
Muzzle Device: Flash Hider
Finish: Black Anodized
Color: Black
Fabric/Material: 4150 Chrome Moly Vanadium
Condition: New
Magazine Included: No
Country of Origin: USA

Aero Precision M5E1 18in .308 Win/7.62x51mm NATO 4150 Chrome Moly V Complete Upper Receiver

Aero Precision M5E1 18in .308 Win/7.62x51mm NATO 4150 Chrome Moly V Complete Upper Receiver Orderable Models

List of Orderable Models

  • Aero Precision M5E1 18in .308 Win/7.62x51mm NATO 4150 Chrome Moly V Complete Upper Receiver , MPN: APAR308554M25 , UPC: 815421020885 , Code: 29D-URC-APAR308554M25
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