Aero Precision M5 Barreled Upper .308 Mid-Length Atlas S-ONE Black - 16"

Manufactured by Aero Precision
SKU: APAR538105M22
MPN: APAR538105M22
Manufactured by Aero Precision
3 Reviews

Out of Stock

NOTE: Limit 1 per household. Quantities exceeding 1 will not allow checkout.



Aero Precision M5 Barreled Uppers are changing the way you shoot large calibers out of a semi-automatic AR-10 platform. The AR-308 platform is not as plug and play as the AR-15 platform and can be a headache when building a gun from the ground up from different manufacturers. Solve that problem with this Aero Precision M5 Assembled Upper Receiver. This model features a 16” 41V50 Chrome Moly Vanadium heavy barrel chambered in .308 Winchester for affordable long range precision shooting and hunting. Comes with a low profile gas block and mid-length gas system for reliable function. The 15” S-ONE free float handguard features M-LOK attachment slots and the Atlas attachment system is extremely strong while being easy to remove. All you need is a bolt carrier group and charging handle and you have a complete upper receiver group.

  • Black anodized finish
  • Chambered in .308 Winchester
  • 16” 41V50 Chrome Moly Vanadium
  • MPI and HPT
  • A2 flash hider
  • Mid-length gas system
  • .750” Gas block shelf
  • 7075-T6 aluminum forged M5 receiver
  • 15” Atlas S-ONE M-LOK handguard
  • 1.5” inside diameter
  • 1.75” outside diameter
  • DPMS high profile
  • Laser engraved T-marks

This AR-10 M5 upper receiver utilizes the DPMS high profile and comes with forward assist and port door cover installed. It is made from 7075-T6 aluminum forgings and like the handguard, features a black anodized finish. The top picatinny rail features laser engraved T-marks for easy identification of where your preferred optic position. The Aero Precision M5 .308 Barreled Upper is what you need for your next build.

Aero Precision takes some of the most state-of-the-art manufacturing techniques and equipment derived from their work in the aerospace industry and applies it to their products in the firearms industry. They have utilized their knowledge from years of building aircraft components to design and engineer AR-15 handguards, receiver sets, scope mounts, and more. They treat every product as if it were a precision flying machine and adhere to strict quality standards to ensure law enforcement, military, and civilian customers receive a product they can rely on.
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AssemblyBarreled Assemblies
Barrel CoatingSalt Bath Nitride
Barrel ContourHeavy
Barrel Length16
Barrel LiningSalt Bath Nitride
Barrel Material41V50 Chrome Moly Vanadium Steel
BrandAero Precision
Caliber Gauge.308 Win
Gas System LengthMid-Length
Gas System TypeDirect Impingement
Handguard15 in Aero Precision ATLAS S-ONE M-LOK Rail
Muzzle DeviceA2 Flash Hider
Thread Pattern5/8 X 24
Twist Rate1:10

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see

Ratings & Reviews

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One happy customer


I ordered this upper on primary arms because it cost way less here, then on aero Percision website. I got it today on 12\23\19. As I opened up the package and felt the weight, Or lack there of I fell in love with it can’t wait to finish my AR10 build and shoot it

Beautiful upper at a reasonable price!!

by -

What can I say, this is one hell of an nice .308 upper from Aero Precision! Beautiful fit and finish and the feel of the Atlas S (Slim) hand guard is very nice to the hands. Outstanding!! Thanks Primary Arms!

Very nice .308 upper at a reasonable price!

by -

This is a really nice Aero Precision .308 upper assembly. My first impression after opening the box was "WOW, this is a really nice upper."
<br>The Atlas S design (M-LOK) is comfortable to the hands. The upper when assembled with the Aero M5 lower is light in weight which make it nice to maneuver during completions I couldn't be happier for this purchase! I also would like to thank Primary Arms for having the best deal for this product. You can't beat Primary Arms prices. AAA+++