Faxon Ion Ultralight 5.56 Upper Receiver Group

Faxon Ion Ultralight 5.56 Upper Receiver Group

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FX5500-U features our 14.5" Pencil Barrel with a permanently attached Slim 3-Port Muzzle Brake which meets the NFA 16" minimum barrel length requirement, 13” Streamline Carbon Fiber Handguard, and Lightweight Bolt Carrier Group. Super light, easy shooting and ultra-rugged, the FX5500-U never compromises strength for weight. 

Pop two pins and shave more than 1 lb off the weight of your AR15!* 

Upper Receiver:

  • 5.56 NATO 14.5" Pencil Barrel w/ Welded 3-Port Brake - meets NFA 16" minimum barrel length requirement 
  • Faxon Enhanced Forged Upper Receiver
  • Faxon 13" Carbon Fiber M-LOK Handguard
  • Faxon Gunner Lightweight Bolt Carrier Group
  • Multi-Position Adjustable Gas Block
  • Radian Weapons Raptor LT Ambi Charging Handle
  • Weight. 3.1 lbs



*When compared to an upper receiver with Socom profile barrel, aluminum handguard, and full mass BCG

Returns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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