Image unavailable
308 Winchester /7.62mm Bolt Carrier Group For Ar .308 - .308 Win /7.62mm Bcg W/9310 Bolt Black Nitride For Ar-308
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$209.99
View on Brownells
You'll be taken to Brownells to complete your purchase.
Hunter's Outpost earns a commission from affiliate links at no extra cost to you.
SKU: 100054340
Overview
Built for AR .308-compatible rifles, this bolt carrier group serves as the firing mechanism for a big-bore rifle build. It is offered with a Black Nitride finish and is MPI/HPT, with a laser-engraved Aero Precision “A” logo included. For hunters and shooters assembling or maintaining a .308/7.62 platform, it provides a straightforward parts choice for rifles intended for heavier cartridges.
Why Hunters Choose the Aero Precision
Black Nitride
Finish is listed among the
Mpi/hpt Testing
Is stated in the product
Carrier Is
A 9310 steel bolt
Gas Key
Uses 4130 steel, Grade 8
Firing Pin
Is machined from 8740 steel
Key Features
- .308 / 7.62 bolt carrier group for AR .308 compatible uppers and rifles
- Black Nitride finish with Nickel or Phosphate finish options listed
- MPI/HPT tested and includes a laser engraved Aero Precision "A" logo
- Carrier machined from 8620 tool steel with 9310 steel bolt
- Gas key uses 4130 steel, Grade 8 hardware, and proper staking
- Firing pin is machined from 8740 steel and hard chrome coated
Best Used For
- AR-308 builders needing a .308/7.62 bolt carrier group for compatible uppers and rifles
- Hunters assembling a big-bore rifle platform with a Black Nitride-finished BCG
- Users wanting an Aero Precision BCG with MPI/HPT inspection and laser-engraved logo
- Builders who prefer carrier options with Nickel or Phosphate finish alternatives
- Owners replacing or upgrading an AR .308 compatible firing mechanism
Specifications
| Blade Finish | Black Nitride |
|---|---|
| Bolt Carrier Material | 8620 Tool Steel |
| Bolt Material | 9310 Steel |
| Compatibility | AR .308 compatible style AR Uppers and Rifles |
| Firing Pin Finish | hard chrome coated |
| Firing Pin Material | 8740 steel |
| Forward Assist Serrations | Yes |
| Gas Key Hardware | Grade 8 hardware |
| Gas Key Material | 4130 Steel |
| Logo Option | Laser engraved Aero Precision 'A' logo or No Logo option |
| Mpihpt | Yes |
Pros
- Black Nitride finish is listed among the available carrier finish options.
- MPI/HPT testing is stated in the product description.
- Carrier is machined from 8620 tool steel, with a 9310 steel bolt.
- Gas key uses 4130 steel, Grade 8 hardware, and proper staking.
- Firing pin is machined from 8740 steel and hard chrome coated.
- Fits AR .308 compatible style AR uppers and rifles.
Considerations & Trade-offs
- Designed for AR .308 compatible style uppers and rifles, so it is not a universal AR bolt carrier group and should be matched to the correct platform.
- The finish options listed include Black Nitride, Nickel, or Phosphate, so the exact surface treatment depends on the version selected.
- The product is described as a firing mechanism for a big-bore rifle build, which means it is intended for a specific .308 / 7.62 setup rather than a general-purpose AR build.
- Laser engraved Aero Precision logo or no-logo option is mentioned, so appearance may vary by configuration and is not fixed across all units.
Suggested Comparisons
- AR-308 upper receivers
- AR-308 complete rifles
- Bolt carrier groups for other AR platform calibers
- AR-308 build components and parts kits
Suggested Accessories
- AR-308 upper receiver
- .308 Winchester / 7.62mm magazines
- AR-308 lower receiver parts kit
- Cleaning kit
Frequently Asked Questions
What platform is this bolt carrier group made for?
It is for AR .308 compatible style AR uppers and rifles, and the title identifies it for .308 Winchester / 7.62mm builds.
What finish does this BCG have?
The source lists a Black Nitride finish. It also notes that Nickel or Phosphate finish options are mentioned in the carrier features, but the main product description highlights Black Nitride.
What materials are listed for the carrier, bolt, gas key, and firing pin?
The carrier is machined from 8620 tool steel, the bolt is 9310 steel, the gas key is 4130 steel with Grade 8 hardware, and the firing pin is machined from 8740 steel with a hard chrome coating.
Does this BCG include any inspection or testing details?
Yes. The description states that it is MPI/HPT.
Is there any logo marking on the carrier?
Yes. The description says it now includes a laser engraved Aero Precision 'A' logo, and it also mentions a No Logo option.