Aero Precision M5 20″ Complete AR10 MLOK Free-Float Upper with Stainless Barrel – 6.5 Creedmoor

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Aero Precision BREACH Charging Handle for AR-10 - Black - Large Latch


Aero Precision M5 20″ Complete AR10 MLOK Free-Float Upper with Stainless Barrel – 6.5 Creedmoor

This product is a complete upper receiver for the AR10/M5 platform, chambered in 6.5 Creedmoor, with a 20″ barrel, 1:8 twist rate, and rifle-length gas system. The upper receiver features an anodized finish, which provides increased durability and corrosion resistance. Please note that this product does not include a BCG (bolt carrier group) or charging handle.

Upper Receiver and Handguard

The upper receiver is constructed from the M5E1 Assembled Upper Receiver, which is a proprietary design from Aero Precision. The M5E1 upper receiver is forged from 7075-T6 aluminum, which is a high-strength alloy that provides exceptional durability and reliability.

The upper receiver features a Gen 2 Enhanced Handguard, which is a free-floating handguard that provides increased accuracy and heat dissipation. The handguard also features M-LOK slots, which allow for the attachment of accessories and other add-ons.

Barrel and Gas System

The 20″ 6.5 Creedmoor Stainless Steel Barrel is a high-quality barrel that provides exceptional accuracy and reliability. The barrel features a low-profile gas block and rifle-length gas tube, which work together to provide smooth and reliable cycling of the firearm. The barrel also features a 1:8 twist rate, which is optimal for stabilizing heavier bullets commonly used in 6.5 Creedmoor.


In addition to its high-quality construction and reliable shooting experience, this upper receiver is also incredibly easy to install. The product comes pre-assembled, so you can easily install it onto your lower receiver using the take-down pins.

Please note that this complete upper does not include a BCG or Charging Handle. You will need to purchase these items separately or use the ones that you already have. With that said, the Aero Precision M5 Complete Upper is an excellent option for anyone looking to build a reliable and accurate 6.5 Creedmoor rifle.

Whether you are a seasoned shooter or a beginner, this upper will meet and exceed your expectations.

Aero Precision’s Excellence Guarantee

Aero Precision is a company that prides itself on its engineering and machining expertise. With roots in the aerospace industry, they bring a level of precision and attention to detail that is unmatched in the firearms industry. Every component that they produce is held to the highest standards of quality and performance.


  • Brand: Aero Precision
  • Model: M5 20″ Complete AR10 MLOK Free-Float Upper with Stainless Barrel
  • Caliber: 6.5 Creedmoor
  • Barrel Length: 20 in
  • Thread Pitch: 5/8×24
  • Twist: 1:8
  • Color: Black and Flat Dark Earth
  • Material: 7075-T6 Aluminum and 4150 Chrome Moly Vanadium
  • Finish: QPQ corrosion-resistant finish
  • Gas System: Rifle
  • Weight: 4.37 lbs

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Have Questions About this Product?

The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.

If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.

Aero Precision Warranty

If for any reason you have a warranty issue with one of our products, please contact us at 253-272-8188.

Please describe your situation, include your name and order number or transaction id. One of our technical specialists will then review your claim and contact you within 3-5 business days.

If you have images to send, please email them to

Damaged Items

In regards to claims dealing with damaged or blemished products, we ask that you create a Help Desk Ticket on your My Account page. If you don’t have an account with us, please go to the Contact Us page and fill out the form for review within 72 hours upon receiving the shipment.

If you have images to send, please email them to

Failed Background Check

There will be a 30% restocking fee on all lower receivers returned because of failed background checks.

Disclaimer: Manufacturer’s warranty is subject to change without prior notice.