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Aero Precision M5 20in .308 Winchester RM15 Complete Upper Receiver Up to 10% Off w/ Free S&H — 4 models

Aero Precision Complete Upper Receiver, M5, .308 Winchester, 20in, Heavy, Rifle Length, 1 in 10, 5/8 x 24, 15in, A2 Flash Hider, Anodized, OD Green, APAR538772M27
Aero Precision M5 Complete Upper Receiver, 20in .308 Rifle Barrel, w/ATLAS R-ONE 15in M-LOK Handguard, Anodized, Black, APAR538705M27
Aero Precision Complete Upper Receiver, M5, .308 Win, 20in, Heavy, Rifle Length, 1 in 10, 5/8 x 24, 15in, A2 Flash Hider, Anodized, Kodiak Brown Anodized, APAR538817M27
Aero Precision M5 Complete Upper Receiver, 20in .308 Rifle Barrel, w/ATLAS R-ONE 15in M-LOK Handguard, Anodized, Flat Dark Earth, APAR538715M27
Aero Precision M5 20in .308 Complete Upper Receiver w/ ATLAS R-ONE Handguard, Black, Flat Dark Earth
Aero Precision Complete Upper Receiver, M5, .308 Win, 20in, Heavy, Rifle Length, 1 in 10, 5/8 x 24, 15in, A2 Flash Hider, Anodized, OD Green Anodized, APAR538772M27
Aero Precision Complete Upper Receiver, M5, .308 Win, 20in, Heavy, Rifle Length, 1 in 10, 5/8 x 24, 15in, A2 Flash Hider, Anodized, OD Green Anodized, APAR538772M27
Aero Precision Complete Upper Receiver, M5, .308 Win, 20in, Heavy, Rifle Length, 1 in 10, 5/8 x 24, 15in, A2 Flash Hider, Anodized, OD Green Anodized, APAR538772M27
Aero Precision M5 Complete Upper Receiver, 20in .308 Rifle Barrel, w/ATLAS R-ONE 15in M-LOK Handguard, Anodized, Black, APAR538705M27
Aero Precision Complete Upper Receiver, M5, .308 Winchester, 20in, Heavy, Rifle Length, 1 in 10, 5/8 x 24, 15in, A2 Flash Hider, Anodized, Kodiak Brown, APAR538817M27
Aero Precision Complete Upper Receiver, M5, .308 Win, 20in, Heavy, Rifle Length, 1 in 10, 5/8 x 24, 15in, A2 Flash Hider, Anodized, Kodiak Brown Anodized, APAR538817M27
Aero Precision Complete Upper Receiver, M5, .308 Win, 20in, Heavy, Rifle Length, 1 in 10, 5/8 x 24, 15in, A2 Flash Hider, Anodized, Kodiak Brown Anodized, APAR538817M27
Aero Precision M5 Complete Upper Receiver, 20in .308 Rifle Barrel, w/ATLAS R-ONE 15in M-LOK Handguard, Anodized, Flat Dark Earth, APAR538715M27
Aero Precision Complete Upper Receiver, M5, .308 Winchester, 20in, Heavy, Rifle Length, 1 in 10, 5/8 x 24, 15in, A2 Flash Hider, Anodized, OD Green, APAR538772M27
1 of 13 images
Aero Precision Complete Upper Receiver, M5, .308 Winchester, 20in, Heavy, Rifle Length, 1 in 10, 5/8 x 24, 15in, A2 Flash Hider, Anodized, OD Green, APAR538772M27
Aero Precision M5 Complete Upper Receiver, 20in .308 Rifle Barrel, w/ATLAS R-ONE 15in M-LOK Handguard, Anodized, Black, APAR538705M27
2 of 13 images
Aero Precision M5 Complete Upper Receiver, 20in .308 Rifle Barrel, w/ATLAS R-ONE 15in M-LOK Handguard, Anodized, Black, APAR538705M27
Aero Precision Complete Upper Receiver, M5, .308 Win, 20in, Heavy, Rifle Length, 1 in 10, 5/8 x 24, 15in, A2 Flash Hider, Anodized, Kodiak Brown Anodized, APAR538817M27
3 of 13 images
Aero Precision Complete Upper Receiver, M5, .308 Win, 20in, Heavy, Rifle Length, 1 in 10, 5/8 x 24, 15in, A2 Flash Hider, Anodized, Kodiak Brown Anodized, APAR538817M27
Aero Precision M5 Complete Upper Receiver, 20in .308 Rifle Barrel, w/ATLAS R-ONE 15in M-LOK Handguard, Anodized, Flat Dark Earth, APAR538715M27
4 of 13 images
Aero Precision M5 Complete Upper Receiver, 20in .308 Rifle Barrel, w/ATLAS R-ONE 15in M-LOK Handguard, Anodized, Flat Dark Earth, APAR538715M27
Aero Precision M5 20in .308 Complete Upper Receiver w/ ATLAS R-ONE Handguard, Black, Flat Dark Earth
5 of 13 images
Aero Precision M5 20in .308 Complete Upper Receiver w/ ATLAS R-ONE Handguard, Black, Flat Dark Earth
Aero Precision Complete Upper Receiver, M5, .308 Win, 20in, Heavy, Rifle Length, 1 in 10, 5/8 x 24, 15in, A2 Flash Hider, Anodized, OD Green Anodized, APAR538772M27
6 of 13 images
Aero Precision Complete Upper Receiver, M5, .308 Win, 20in, Heavy, Rifle Length, 1 in 10, 5/8 x 24, 15in, A2 Flash Hider, Anodized, OD Green Anodized, APAR538772M27
Aero Precision Complete Upper Receiver, M5, .308 Win, 20in, Heavy, Rifle Length, 1 in 10, 5/8 x 24, 15in, A2 Flash Hider, Anodized, OD Green Anodized, APAR538772M27
7 of 13 images
Aero Precision Complete Upper Receiver, M5, .308 Win, 20in, Heavy, Rifle Length, 1 in 10, 5/8 x 24, 15in, A2 Flash Hider, Anodized, OD Green Anodized, APAR538772M27
Aero Precision Complete Upper Receiver, M5, .308 Win, 20in, Heavy, Rifle Length, 1 in 10, 5/8 x 24, 15in, A2 Flash Hider, Anodized, OD Green Anodized, APAR538772M27
8 of 13 images
Aero Precision Complete Upper Receiver, M5, .308 Win, 20in, Heavy, Rifle Length, 1 in 10, 5/8 x 24, 15in, A2 Flash Hider, Anodized, OD Green Anodized, APAR538772M27
Aero Precision M5 Complete Upper Receiver, 20in .308 Rifle Barrel, w/ATLAS R-ONE 15in M-LOK Handguard, Anodized, Black, APAR538705M27
9 of 13 images
Aero Precision M5 Complete Upper Receiver, 20in .308 Rifle Barrel, w/ATLAS R-ONE 15in M-LOK Handguard, Anodized, Black, APAR538705M27
Aero Precision Complete Upper Receiver, M5, .308 Winchester, 20in, Heavy, Rifle Length, 1 in 10, 5/8 x 24, 15in, A2 Flash Hider, Anodized, Kodiak Brown, APAR538817M27
10 of 13 images
Aero Precision Complete Upper Receiver, M5, .308 Winchester, 20in, Heavy, Rifle Length, 1 in 10, 5/8 x 24, 15in, A2 Flash Hider, Anodized, Kodiak Brown, APAR538817M27
Aero Precision Complete Upper Receiver, M5, .308 Win, 20in, Heavy, Rifle Length, 1 in 10, 5/8 x 24, 15in, A2 Flash Hider, Anodized, Kodiak Brown Anodized, APAR538817M27
11 of 13 images
Aero Precision Complete Upper Receiver, M5, .308 Win, 20in, Heavy, Rifle Length, 1 in 10, 5/8 x 24, 15in, A2 Flash Hider, Anodized, Kodiak Brown Anodized, APAR538817M27
Aero Precision Complete Upper Receiver, M5, .308 Win, 20in, Heavy, Rifle Length, 1 in 10, 5/8 x 24, 15in, A2 Flash Hider, Anodized, Kodiak Brown Anodized, APAR538817M27
12 of 13 images
Aero Precision Complete Upper Receiver, M5, .308 Win, 20in, Heavy, Rifle Length, 1 in 10, 5/8 x 24, 15in, A2 Flash Hider, Anodized, Kodiak Brown Anodized, APAR538817M27
Aero Precision M5 Complete Upper Receiver, 20in .308 Rifle Barrel, w/ATLAS R-ONE 15in M-LOK Handguard, Anodized, Flat Dark Earth, APAR538715M27
13 of 13 images
Aero Precision M5 Complete Upper Receiver, 20in .308 Rifle Barrel, w/ATLAS R-ONE 15in M-LOK Handguard, Anodized, Flat Dark Earth, APAR538715M27

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Questions & Answers
Does or come with a charging handle and bcg? Expert Answer

No, this upper receiver does not come with the bolt carrier group and charging handle.

by Armando R., Gear Expert, June 26, 2021
See 4 More Answers
Will this work with a DPMS Gen 1 lower receiver?

As long as it is a true Gen 1 "high profile", many 80% lowers are said to be Gen 1, however they are actually low profile! While they will work, the fit is not all that great and there is a gap between the upper and lower

by Josh, Verified Owner, October 12, 2021
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
Great Product by Ian, October 28, 2021
The product is what you expect from Aero. It is quality and affordable. My only complaint is the upper appeared to be in stock when I ordered it. However, after I completed the purchase I was notified it was out of stock. The buyer should be aware of...
Read More...
19/20 found this helpful
Helpful Positive Review
Awesome quality by Dan, Verified Owner, June 14, 2020
amazin product for an amazing price is what you get with this. Perfect AR10 is what has been built with this. love aero precision and love optics planet. the price was less than what aero had on their website. siighted in at 100 yds and punching stee...
Read More...
10/10 found this helpful
Helpful Negative Review
M5E1 308. 18" upper by WEEBO, February 23, 2022
My only gripe is that it's become clear to me that optics planet gets aeros blems. Literally all aero products I buy off here have blemishes. When I buy directly from the website they are pristine. Now because of how I use my guns it's not that big o...
Read More...
19/19 found this helpful
Most Recent Reviews
Wild Pig Killer by James, Verified Owner, January 15, 2026
I installed this on A DPMS LR 243 lower. installation was easy. Added ATN 4K X sight scope and sighted in on Saturday morning. I took it deer hunting on SundaY afternoon and killed a spike buck with the first shot. I looking forward to killing wild p...
Read More...
Most Recent Reviews
no caliber info on it by Frank, Verified Owner, February 18, 2022
The only issue I have with this product is I can’t find any ammo caliber information marked on this complete upper. Isn’t that a big safety concern? Every gun I have from $100 to $2000 has that info marked somewhere.
5/53 found this helpful
Most Recent Reviews
you get what you pay for by bretta snob, Verified Owner, July 19, 2025
Handguard and upper receiver are 2 different colors, qd mounts aren't machined right so they won't work with qd swing swivels, and these are blems, mine had a few minor blems on the upper receiver and a notch on the side, dust cover had scratches lik...
Read More...
Read All 12 Reviews

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ATTENTION! We currently do not ship this product to P.O. Boxes, AK, CA, CT, DE, HI, MA, NJ, NY, U.S. Territories, or select Colorado locations. Please see our policies for more information or a detailed list of locations.

made-in-usa-flag Made in USA

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 M5 20in .308 Winchester RM15 Complete Upper Receiver

The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. Our proprietary ATLAS attachment system is a durable and dependable mounting platform, maintaining a slim profile while still providing the strength and stability customers have grown to love from Aero Precision handguards.image

WARNING: California`s Proposition 65

Specifications for Aero Precision M5 20in .308 Winchester RM15 Complete Upper Receiver:

Manufacturer: Aero Precision
Caliber: .308 Winchester
Barrel Length: 20 in
Gas System Length: Rifle Length
Barrel Twist Rate: 1-10
Muzzle Device: A2 Flash Hider
Gun Model: M5
Gas Block Journal Size-Diameter: .750 in
Handguard Length: 15 in
Gun Rail: Picatinny
Gun Type: Rifle
Gun Make: Aero Precision
Magazine Included: No
Condition: New
Projectile Caliber: .308 Caliber
Country of Origin: USA

Features of Aero Precision M5 20in .308 Winchester RM15 Complete Upper Receiver

  • Full top picatinny rail for optional attachments
  • Quick disconnect sling socket at the 3, 6 and 9 o'clock positions
  • Compatible with low profile gas blocks
  • Compatible with AR-308 Upper Recievers with a thread pitch of 1-7/16 x 16 along with a DPMS High Profile (.210) Tang Rail

Package Contents:

  • Aero Precision M5 20in .308 Winchester RM15 Complete Upper Receiver
  • M5 Assembled Upper Receiver
  • ATLAS R-ONE Handguard of choice
  • 16in .308 CMV Barrel Mid-Length
  • Low Profile Gas Block
  • Mid-Length Gas Tube

What firearm models does the manufacturer say Aero Precision M5 20in .308 Winchester RM15 Complete Upper Receiver is compatible with?

The manufacturer suggests that Aero Precision M5 20in .308 Winchester RM15 Complete Upper Receiver is compatible with M5

Aero Precision M5 20in .308 Winchester RM15 Complete Upper Receiver Orderable Models

List of Orderable Models

  • Aero Precision Complete Upper Receiver, M5, .308 Winchester, 20in, Heavy, Rifle Length, 1 in 10, 5/8 x 24, 15in, A2 Flash Hider, Anodized, OD Green, APAR538772M27 , MPN: APAR538772M27 , UPC: 840014621163 , Code: 29D-UFH-YM102K-APAR538772M27
  • Aero Precision M5 Complete Upper Receiver, 20in .308 Rifle Barrel, w/ATLAS R-ONE 15in M-LOK Handguard, Anodized, Black, APAR538705M27 , MPN: APAR538705M27 , UPC: 840014609819 , Code: 29D-UFH-YM102K-APAR538705M27
  • Aero Precision Complete Upper Receiver, M5, .308 Winchester, 20in, Heavy, Rifle Length, 1 in 10, 5/8 x 24, 15in, A2 Flash Hider, Anodized, Kodiak Brown, APAR538817M27 , MPN: APAR538817M27 , UPC: 840014621170 , Code: 29D-UFH-YM102K-APAR538817M27
  • Aero Precision M5 Complete Upper Receiver, 20in .308 Rifle Barrel, w/ATLAS R-ONE 15in M-LOK Handguard, Anodized, Flat Dark Earth, APAR538715M27 , MPN: APAR538715M27 , Code: 29D-UFH-YM102K-APAR538715M27

Aero Precision M5 20in .308 Winchester RM15 Complete Upper Receiver Unavailable & Discontinued Models

List of Unorderable Models

  • DEMO, Aero Precision Complete Upper Receiver, M5, .308 Winchester, 20in, Heavy, Rifle Length, 1 in 10, 5/8 x 24, 15in, A2 Flash Hider, Anodized, OD Green, APAR538772M27 , MPN: APAR538772M27-DEMO , Code: 29D-UFH-YM102K-APAR538772M27-DEMO
  • Aero Precision M5 Complete Upper Receiver, 20in .308 Rifle Barrel, w/ATLAS R-ONE 15in KeyMod Handguard, Anodized, Black, APAR538605P27 , MPN: APAR538605P27 , Code: 29D-UFH-YM102K-APAR538605P27
  • Aero Precision M5 Complete Upper Receiver, 20in .308 Rifle Barrel, w/ATLAS R-ONE 15in KeyMod Handguard, Anodized, Flat Dark Earth, APAR538615P27 , MPN: APAR538615P27 , Code: 29D-UFH-YM102K-APAR538615P27
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