Aero Precision AR-15 Black Nitride Bolt Carrier Group

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Aero Precision 5.56 Nitride Bolt Carrier Group

Aero Precision makes high quality parts suitable for any build, and this BCG is no exception. This part features a slick, easy-to-clean black nitride finish, and a 9310 steel bolt that’s been high pressure tested (HPT) and magnetic particle inspected (MPI). Along with a 8620 steel carrier, with a properly staked gas key, this BCG makes a suitable starting point for a build, or upgrade to existing rifle.

Why Black Nitride?

Black nitride finishes are industry standard treatment for bolt carrier groups and barrels. This process increases surface hardness and lubricity, acting as an effective replacement for rough phosphate finishes and expensive chrome plating. Nitride strikes the perfect middle ground, making a great choice for a variety of shooters, and it makes maintenance simple.


  • Caliber: .223/5.56, .300 Blackout, .350 Legend
  • Finish: Black Nitride
  • Carrier Type: M16/Full Auto Capable (Best for AR-15)
  • Carrier: 8620 Gun Steel
  • Bolt: 9310 Steel, HPT Tested and MPI Marked
  • Mil-Spec O-Ring and Gas Rings
  • Weight: 11.5 oz.
  • Country of Origin: USA

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.

Customer Reviews

Based on 1 review
Tony Thompson

Beautiful slick finish and the Aero logo is holding up well. Excellent shipping from AT3 Tactical!

Thanks for sharing your feedback! We're glad you're satisfied with your purchase.