Aero Precision M4E1-T AR15 Complete Upper .223/5.56 NATO 14.5″ – No BCG/Charging Handle

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Aero Precision M4E1-T Enhanced AR-15 Upper

Upgrade your AR build with Aero Precision’s M4E1-T complete upper receiver. This top-quality assembly features a 14.5″ 5.56 NATO barrel with a mid-length gas system for reliable operation. The 1:7 twist rate barrel is topped with an M4 flat-top upper and low-profile gas block.

The 12.7″ ATLAS R-ONE M-LOK handguard provides a slim, free-float design with M-LOK slots for accessory customization. The upper is made in the USA from premium materials.

This complete upper does not include a bolt carrier group or charging handle.


  • Brand: Aero Precision
  • Model: M4E1-T AR15 Complete Upper .223/5.56 NATO 14.5″
  • MPN: APAR700704M5, APAR700714M5
  • Barrel Length: 14.5″
  • Barrel Profile: Government
  • Gas System: Mid-Length
  • Twist Rate: 1:7
  • Caliber: 5.56 NATO / .223 Rem
  • Muzzle: A2 Flash Hider
  • Handguard: 12.7″ ATLAS R-ONE M-LOK
  • Upper Receiver: M4 Flat-Top
  • Material: Aluminum
  • Finish: Black Anodized or FDE Cerakote
  • Made in USA
  • Does Not Include BCG or Charging Handle

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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.