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Questions & Answers
Does this item include the BCG and charging handle? Expert Answer

No this does not include a BCG or charging handle.

by Ben, Gear Expert, February 22, 2021
Does this come with BCG and charging handle? Expert Answer

This does not include a BCG or charging handle.

by Ben, Gear Expert, February 22, 2021
Customer Reviews
Helpful Positive Review 308 Upper Receiver by Shane, Verified Owner, January 23, 2025
Perfect Fit for my DPMS 308 Lower. Super Fast Shipping. Thank you Optics Planet.
1/1 found this helpful
Helpful Positive Review Great Product, Speculation about Optics Planet Resolved by Colton, October 7, 2021
When I ordered this from Optics Planet, I was not worried about the product itself, as I have a lot of confidence in Aero Precision's parts. Instead, I was more worried about Optics Planet itself and whether it would actually ship my item, as I had s...
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1/4 found this helpful
Helpful Positive Review Aero Precision M5 Upper by todd, May 13, 2022
I bought this upper because of the great reputation of Aero Precision, I haven't used it yet but the obvious craftsmanship and attention to detail is great! I look forward to using more Aero Precision parts moving forward.
1/2 found this helpful
Helpful Positive Review Excellent upper, two glaring flaws by loucipher, Verified Owner, December 7, 2020
All told, this is an excellent 308 upper. Very accurate. However, there are two major issues. First, the big one. The front takedown pin is stuck. I do not know how, but it will not come back out with any amount of force I've dared to apply. It still...
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30/39 found this helpful
Helpful Positive Review .75 MOA accuracy at 100m w/ 20" barrel by Ian, Verified Owner, July 2, 2023
First off, with the right ammo this is extremely accurate. The build quality is exceptional and very ergonomic. A bit on the heavy side, which is expected. It doesn't like to cycle steel case ammo, which isn't a problem being I purchased this for pre...
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2/2 found this helpful
Helpful Positive Review Update: This upper + JP BCG = returned to Aero by WJ, Verified Owner, December 9, 2021
I originally posted that the JPBCG would not go into battery and sent it back to Aero. Well I forgot about this review and Aero had gotten me the upper back in about a week from date shipped. Now the bolt locks into battery like butter. I could not b...
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4/4 found this helpful
Read All 10 Reviews
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Product Info for Aero Precision M5 20in .308 CMV Complete Upper Receiver w/ Flash Hider & ATLAS S-ONE Handguard

Building a lightweight and accurate rifle can be a challenge, but the Aero Precision M5 Complete Upper w/ ATLAS S-ONE Handguard makes it easier than ever to create a reliable weapon platform that can deliver premium performance in the field, at the range, or anywhere else you need it. To assist in your lightweight build, these AR15 Upper Receivers come outfitted with an ATLAS S-ONE handguard that boasts a front and rear Picatinny rail. This handguard is also compatible with QD sling sockets and low-profile gas blocks and provides a slim profile so that you can perfectly balance the weight of your accessories and clothing with the use of a quick-detach sling mount.image

The M5 receiver itself is constructed out of 7075 T6 aircraft-grade aluminum while the barrel is made out of 4150 Chrome Moly Vanadium with a corrosion-resistant finish to outlast the elements. To create a durable and reliable weapon platform, these Aero Precision M5 Complete Upper Receivers are HP and MPI tested. On top of that, they have DPMS High Profile (DPMS .750) barrel with a 1 in 10 twist rate. On the other hand, this 15in ATLAS S-ONE handguard has an inside diameter of 1.5in and an outside diameter of 1.7in compatible with low profile gas blocks. The double lugged 10in length upper works with any aftermarket 10in or shorter rail and it comes with a 15in ATLAS S-ONE handguard. Grab this Aero Precision upper today to boost your build with high-quality components built to last.

Specifications for Aero Precision M5 20in .308 CMV Complete Upper Receiver w/ Flash Hider & ATLAS S-ONE Handguard:

Manufacturer: Aero Precision
Caliber: .308 Winchester
Overall Length: 30 in
Barrel Length: 20 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 Make: Aero Precision
Included Accessories: None
Weight: 70 oz
Magazine Included: No
Mount Type: M-LOK
Projectile Caliber: .308 Caliber
Country of Origin: USA

Features of Aero Precision M5 20in .308 CMV Complete Upper Receiver w/ Flash Hider & ATLAS S-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 S-ONE Handguard Features:
  • Front and rear picatinny rail
  • Eliminated center of top rail for weight reduction
  • Indexing grooves in 12:00 position for positive grip control
  • Quick disconnect sling socket at the 3, 6 and 9 o'clock positions
  • Compatible with low profile gas blocks
  • 1.5in Inside diameter
  • 1.7in 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 S-ONE Hanguards
  • 20in .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: 55.2 oz
  • DPMS Barrel Extension
  • HP and MPI Tested

Package Contents:

  • Aero Precision M5 20in .308 CMV Complete Upper Receiver w/ Flash Hider & ATLAS S-ONE Handguard

Aero Precision M5 20in .308 CMV Complete Upper Receiver w/ Flash Hider & ATLAS S-ONE Handguard Orderable Models

List of Orderable Models

Aero Precision M5 Complete Upper Receiver, 20in .308 CMV Rifle Barrel, w/ATLAS S-ONE 15in M-LOK Handguard, Anodized, Black, APAR538105M27 , MPN: APAR538105M27 , UPC: 840014609291 , Code: 29D-UFH-YM92K-APAR538105M27
Aero Precision M5 Complete Upper Receiver, 20in .308 CMV Rifle Barrel, w/ATLAS S-ONE 15in M-LOK Handguard, Anodized, Flat Dark Earth, APAR538115M27 , MPN: APAR538115M27 , Code: 29D-UFH-YM92K-APAR538115M27

Aero Precision M5 20in .308 CMV Complete Upper Receiver w/ Flash Hider & ATLAS S-ONE Handguard Unavailable & Discontinued Models

List of Unorderable Models

Aero Precision M5 Complete Upper Receiver, 20in .308 CMV Rifle Barrel, w/ATLAS S-ONE 15in KeyMod Handguard, Anodized, Black, APAR538005P27 , MPN: APAR538005P27 , Code: 29D-UFH-YM92K-APAR538005P27
Aero Precision M5 Complete Upper Receiver, 20in .308 CMV Rifle Barrel, w/ATLAS S-ONE 15in KeyMod Handguard, Anodized, Flat Dark Earth, APAR538015P27 , MPN: APAR538015P27 , Code: 29D-UFH-YM92K-APAR538015P27
DEMO, Aero Precision M5 Complete Upper Receiver, 20in .308 CMV Rifle Barrel, w/ATLAS S-ONE 15in M-LOK Handguard, Anodized, Black, APAR538105M27 , MPN: APAR538105M27-DEMO , Code: 29D-UFH-YM92K-APAR538105M27-DEMO
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