Aero Precision EPC-9 16″ Complete AR9 Free-Float Upper – 9MM

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Aero Precision EPC-9 16″ Complete AR9 Free-Float Upper – 9MM


The Aero Precision EPC-9 Complete Upper is a high-quality upper receiver designed for 9MM caliber firearms. The upper receiver features a 16″ 9MM CMV barrel with a 1:10 twist rate, providing accurate and reliable performance. The upper receiver is completed with a 15″ ATLAS S-ONE handguard, designed with size and weight in mind while still providing ample space for attachment needs.

Barrel and Gas System

The Aero Precision EPC-9 operates by using a blowback system, meaning no gas tube or gas block is needed to function. The barrel is made of 4150 Chrome Moly Vanadium and coated with a QPQ corrosion-resistant finish for long-term wear and weather resistance.

Please note that this complete upper DOES NOT include a Bolt Carrier Group (BCG) and Charging Handle.


The 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. This complete upper receiver is a great choice for those looking for a reliable and high-quality upper receiver for their 9MM firearm.

Aero Precision EPC-9 16" Complete AR9 Free-Float Upper - 9MM

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.

Investing in an Aero Precision upper is a smart choice for anyone who wants a reliable and accurate AR15 and AR9 build.

Product Details

  • EPC-9 Upper Receiver
  • 15″ ATLAS S-ONE Handguard
  • 16″ 9MM CMV Barrel
  • Product comes assembled
  • Does not include BCG or Charging Handle


  • Brand: Aero Precision
  • Model: EPC-9 16″ Complete AR9 Free-Float Upper
  • Caliber: 9MM
  • Barrel Length: 16 in
  • Thread Pitch: 1/2×28
  • Twist: 1:10
  • Color: Black and Flat Dark Earth
  • Material: 7075-T6 Aluminum and 4150 Chrome Moly Vanadium
  • Finish: QPQ corrosion-resistant finish
  • Gas System: Mid-Length
  • Weight: 4.41 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.