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Questions & Answers
Can you shoot 7.62x51 out of this?

If your barrel is marked .308, you are good to go on 7.62x51 ammo as well.

by Top, Verified Owner, December 16, 2021
Can you use NATO ammo, with the higher chamber pressure, in this upper? Expert Answer

Yes. The 18" .308 barrel included in this Aero Precision M5 18in .308 CMV Complete Upper Receiver is HP and MPI inspected with M4 feed ramps, and made from 4150 Chrome Moly Vanadium.

by Ethan, Gear Expert, August 10, 2022
Customer Reviews
Helpful Positive Review
.308 upper by Douglas, December 1, 2022
Arrived promptly in oversized box that had no indication of what was inside ( I like that). Fit perfectly, fit and finish looks good all around, no loose parts or wiggle anywhere. Rails match up perfectly with the receiver. Barrel and flash suppres...
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4/4 found this helpful
Helpful Positive Review
I'm still a noob with firearms, but when the title says "complete upper receiver," I assumed the upper came with everything. I don't see anywhere in the description that says the BCG or charger will not be included. That should deff be made super cle...
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3/5 found this helpful
Helpful Positive Review
FDE, It's a beautiful thing! by Top, Verified Owner, December 23, 2021
Many thanks to Optics Planet for being the only one, well, on the planet! able to supply and deliver, Aero Precision uppers before Christmas. The Aero version of FDE is a little darker than most but nice. I bought the lower in September. So, I hav...
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6/6 found this helpful
Helpful Positive Review
va va va boom by Vernster, Verified Owner, January 12, 2022
If you can beat this price on such a quality product, than beat it. You couldn't build it for this price unless you paid yourself 8 bucks an hour. While you're building, I'll be shooting. Love it. OpticsPlanet always has your back...and front .
2/3 found this helpful
Helpful Positive Review
Aero precision upper by Mike, Verified Owner, February 24, 2022
Awesome product, very good, high quality and it is highly recommended… already fired 500 rounds and it is very accurate, I would recommend this to anyone.. very clean, optics planet sends high quality products… will be glad to do business again ��
3/4 found this helpful
Helpful Positive Review
Good upper by Frank, Verified Owner, July 20, 2023
Fit and finish are good. Accuracy is good. I’ve shot my 18 inch barrel out to 600 yards easily. The upper is pretty heavy, if you’re looking for a light weight upper, this ain’t it. My other complaint is how close the hand guard is to the barrel...
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3/3 found this helpful
Read All 10 Reviews

Black Friday Starts NOW! Deals on Aero Precision, Stag, Ballistic Advantage and VG6 Precision

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Prices have been cut drastically on this product as part of a special offer. These prices are so low that there's no double-dipping with coupons or any additional discounts, but you'll still get the best deal out there. This offer won't last long, so don't miss out!
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ATTENTION! We currently do not ship this product to AK, CA, HI, IL, NY, WA, P.O. Boxes, and U.S. Territories.

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 18in .308 CMV Complete Upper Receiver with Flash Hider w/ ATLAS R-ONE Handguard

The Aero Precision M5 18in .308 CMV Complete Upper Receiver with Flash Hider w/ ATLAS R-ONE Handguard is the perfect choice for your next AR build. Designed to be as lightweight, durable, and reliable as possible, these AR15 Upper Receivers have ATLAS R-ONE Handguards to give you plenty of space for your favorite attachments. Whether you're planning on attaching a large rifle scope for predator hunting or just want to add a weapon light and laser sight for general shooting, the Aero Precision M5 18in .308 CMV Complete Upper Receiver with Flash Hider w/ ATLAS R-ONE Handguard delivers. And, unlike some AR10s, it maintains a slim profile to stay maneuverable. image

Specifications for Aero Precision M5 18in .308 CMV Complete Upper Receiver with Flash Hider w/ ATLAS R-ONE Handguard:

Manufacturer: Aero Precision
Caliber: .308 Winchester
Barrel Length: 18 in
Gas System Length: Rifle Length
Barrel Twist Rate: 1-10
Threads per Inch: 5/8x24
Handguard Type: Free-Float
Muzzle Device: A2 Flash Hider
Gun Model: M5
Condition: New
Fabric/Material: 4150 Chrome Moly Vanadium
Gas Block Journal Size-Diameter: .750 in
Handguard Length: 15 in
Gun Rail: Picatinny
Gun Type: Rifle
Gun Make: Aero Precision
Weight: 68.5 oz
Magazine Included: No
Mount Type: M-LOK
Projectile Caliber: .308 Caliber
Country of Origin: USA

Features of Aero Precision M5 18in .308 CMV Complete Upper Receiver with Flash Hider w/ ATLAS R-ONE Handguard

  • M5 Assembled Upper Features:
  • Forged from 7075 T6 aluminum
  • M4 Feedramps
  • .2795 takedown pin holes
  • Laser engraved T-marks
  • DPMS High Profile (.210) Tang)
  • Includes port door and forward assist
  • ATLAS R-ONE Handguard Features:
  • 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
  • 1.5in Inside diameter
  • 1.75in Outside diameter
  • 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
  • Learn More about our NEW ATLAS Handguards
  • 18in .308 CMV Barrel Features:
  • Twist: 1 in 10
  • Threading: 5/8 x 24
  • Material: 4150 Chrome Moly Vanadium
  • Finish: QPQ Corrosion Resistant
  • Gas Block Journal: .750
  • Gas System Length: Rifle Length
  • Weight: 52.35 oz
  • DPMS Barrel Extension
  • HP and MPI Tested

Package Contents:

  • Aero Precision M5 18in .308 CMV Complete Upper Receiver with Flash Hider w/ ATLAS R-ONE Handguard

Aero Precision M5 18in .308 CMV Complete Upper Receiver with Flash Hider w/ ATLAS R-ONE Handguard Orderable Models

List of Orderable Models

  • Aero Precision M5 Complete Upper Receiver w/Flash Hider, 18in .308 Rifle Barrel, w/ATLAS R-ONE 15in M-LOK Handguard, Anodized, Black, APAR538705M25 , MPN: APAR538705M25 , UPC: 840014609734 , Code: 29D-UFH-YM100K-APAR538705M25
  • Aero Precision M5 Complete Upper Receiver, 18in .308 Rifle Barrel, w/ATLAS R-ONE 15in M-LOK Handguard, Anodized, Flat Dark Earth, APAR538715M25 , MPN: APAR538715M25 , UPC: 840014609741 , Code: 29D-UFH-YM100K-APAR538715M25

Aero Precision M5 18in .308 CMV Complete Upper Receiver with Flash Hider w/ ATLAS R-ONE Handguard Unavailable & Discontinued Models

List of Unorderable Models

  • Aero Precision M5 Complete Upper Receiver, 18in .308 Rifle Barrel, w/ATLAS R-ONE 15in KeyMod Handguard, Anodized, Black, APAR538605P25 , MPN: APAR538605P25 , Code: 29D-UFH-YM100K-APAR538605P25
  • Aero Precision M5 Complete Upper Receiver, 18in .308 Rifle Barrel, w/ATLAS R-ONE 15in KeyMod Handguard, Anodized, Flat Dark Earth, APAR538615P25 , MPN: APAR538615P25 , Code: 29D-UFH-YM100K-APAR538615P25
  • DEMO, Aero Precision M5 Complete Upper Receiver w/Flash Hider, 18in .308 Rifle Barrel, w/ATLAS R-ONE 15in M-LOK Handguard, Anodized, Black, APAR538705M25 , MPN: APAR538705M25-DEMO , Code: 29D-UFH-YM100K-APAR538705M25-DEMO
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