Aero Precision .308 Upper Parts Kit – Dust Cover and Forward Assist

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Aero Precision M5 .308 Stripped Upper Receiver

Aero Precision M5 .308 Stripped Upper Receiver - Black


Simple & Functional Complete Upper Parts Kit For AR-10 Rifles

The AR-10 platform can be tricky and if you’re going for a new Aero Precision build, don’t gamble your money on anything but an Aero Precision Upper Parts kit.  This upper parts kit is simple and functional and offers high-quality, precision machined components that will serve a lifetime.

Getting all the components from a reputable, quality manufacturer like Aero Precision is a smart move. You will save time, and time is money.

This kit includes all the parts you need to assemble your M5 (.308) Upper Receiver including an Ejection Port Cover and a Forward Assist.


  • Forward Assist Assembly
  • Forward Assist Spring
  • Forward Assist Threaded Roll Pin
  • Ejection Port Cover Door
  • Ejection Port Cover Rod
  • Ejection Port Cover Spring


  • Aero Precision M5E1 Enhanced Upper Receivers
  • Aero Precision M5E1 Threaded Upper Receivers
  • Need a standard forward assist roll pin for installing on DPMS Style AR10

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.