Aero Precision .308/7.62 Black Nitride Bolt Carrier Group for AR-10

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The Ideal BCG Upgrade For .308/7.62 Platforms

The Aero Precision .308/7.62 Bolt Carrier Group is the ideal upgrade from a Standard BCG to improve the overall performance and reliability on big-bore AR-10 platforms. Aero Precision offers this BCG in black nitride finish that reduces friction, minimizes the need for lubricants and cleaning, and provides excellent corrosion resistance for a lifetime of use.

The carrier is machined to fit AR .308 compatible style AR Uppers and Rifles and its multi-caliber bolt is designed to function with .308, 7.62×51, .338 Federal, and other .308 based cartridges.

Durable MPI-Tested Steel Construction

The Aero Precision .308/7.62 Bolt Carrier Group is constructed from a combination of 8620 Tool Steel (Carrier) and case-hardened 9310 Steel (Bolt) for extreme durability. It is then Magnetic Particle Inspected (MPI) to ensure there are no hidden cracks or stress points. It also now includes a laser engraved ‘A’ logo for an additional Aero Precision classic look.

All bolt components are shot-peened and black nitride coated to reduce friction during use and ensure long-lasting reliable performance. Also check out the Aero Precision .308/7.62 Nickel Boron Bolt Carrier Group for more options.

Carrier Features:

  • Machined from 8620 Tool Steel (Carrier) and 9310 Steel (Bolt)
  • Finish: Black Nitride – advanced lower friction coating that minimizes the need for lubricants and cleaning
  • Gas Key: 4130 Steel attached with Grade 8 hardware and properly staked
  • Firing Pin: Machined from 8740 steel and hard chrome coated
  • Forward Assist serrations
  • Laser engraved Aero Precision logo
  • Carrier fits AR .308 compatible style AR Uppers and Rifles

Bolt Features:

  • Material: Case Hardened 9310 Steel
  • Finish: All bolt components are shot-peened and black nitride coated
  • Extractor: Machined from 4340 Steel with double o-rings and double springs
  • Magnetic Particle Inspected and High Pressure Tested
  • High-pressure bolt – external surfaces are CNC ground after heat treat for a precision fit and firing pinhole diameter is reduced to .070″
  • Multi-caliber bolt designed to function with .308, 7.62×51, .338 Federal and other .308 based cartridges.

BCG Includes:

  • Bolt carrier
  • Complete bolt
  • Firing pin
  • Cam pin
  • Retaining pin

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 support@aeroprecisionusa.com

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 support@aeroprecisionusa.com

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.