Bolt PartsAero PrecisionSold by Brownells

Aero Precision

Epc/Ar9 9mm Luger Bolt Carrier Group - Epc/Ar9 9mm Luger Bolt Carrier Group Nitride

Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.

Machined From

8620 steel bolt assembly

Black Nitride

Finish

Includes Grade

23 titanium firing pin

Includes 4140

Steel extractor

Includes 4140

Steel bolt guides

$179.99
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SKU: 430108377

Overview

Built for an EPC or AR9 9mm Luger blowback setup, this bolt carrier group serves as the core component of the build. It is machined from 8620 steel and finished in black nitride, with a grade 23 titanium firing pin, 4140 steel extractor, 4140 steel bolt guides, and all included parts already installed. The result is a purpose-specific assembly for shooters assembling a 9mm AR platform, though Aero notes it may not be compatible with some Mfg: Aero Precision configurations.

Why Hunters Choose the Aero Precision

Machined From

8620 steel for the EPC/AR9

Black Nitride

Finish included on the bolt

Includes Grade

23 titanium firing pin

Comes 4140

A 4140 steel extractor and

All Listed

Parts are installed for a

Key Features

  • Machined from 8620 steel bolt assembly
  • Black nitride finish
  • Includes grade 23 titanium firing pin
  • Includes 4140 steel extractor
  • Includes 4140 steel bolt guides
  • All parts are installed
  • May not be compatible with Mfg: Aero Precision

Best Used For

  • Builders assembling an EPC/AR9 blowback platform and needing a complete bolt assembly.
  • Users who want a 9mm Luger bolt carrier group with all major parts installed.
  • AR platform owners sourcing an Aero Precision EPC bolt for a dedicated 9mm build.
  • Shooters comparing components for a blowback AR setup with nitride-finished bolt parts.

Specifications

Blade FinishBlack Nitride
Bolt Guides Material4140 Steel
Bolt Material8620 Steel
Caliber9mm Luger
Compatibility DisclaimerAero's 9mm Bolt may not be compatible with Mfg: Aero Precision
Extractor Material4140 Steel
Firing Pin MaterialGrade 23 Titanium
Firing Pin Retaining PinIncluded
Heavy Duty Extractor Coil PinIncluded

Pros

  • Machined from 8620 steel for the EPC/AR9 bolt assembly
  • Black nitride finish included on the bolt assembly
  • Includes a grade 23 titanium firing pin
  • Comes with a 4140 steel extractor and bolt guides
  • All listed parts are installed for a complete bolt assembly
  • Designed for blowback AR platform firearms

Considerations & Trade-offs

  • Compatibility may need verification, as the product notes Aero's 9mm bolt may not be compatible with Mfg: Aero Precision.
  • This is a bolt assembly for EPC/AR9 blowback builds, so it is intended for that platform rather than a broader AR application.
  • The assembly includes installed parts, which is convenient, but it also means component-level customization is limited compared with sourcing each part separately.
  • The nitride finish is a functional finish choice, but the listing does not provide additional performance details beyond the finish itself.

Suggested Comparisons

  • AR-9 bolt carrier group
  • 9mm blowback AR bolt assembly
  • AR pistol caliber carbine bolt components

Suggested Accessories

  • Bolt carrier group
  • Firing pin
  • Extractor
  • Extractor pin

Frequently Asked Questions

What platform is this bolt carrier group intended for?

It is the Aero Precision EPC/AR9 Bolt for an EPC build and is described as a 9mm Luger bolt carrier group for blowback AR platform firearms.

What materials are listed for the bolt assembly and included parts?

The source lists a bolt assembly machined from 8620 steel, 4140 steel bolt guides, a grade 23 titanium firing pin, and a 4140 steel extractor. A heavy duty extractor coil pin is also included, with all parts installed.

Does this bolt carrier group have a finish?

Yes. It is listed with a black nitride finish.

Is this compatible with all 9mm AR builds?

The source includes a disclaimer that Aero's 9mm bolt may not be compatible with Mfg: Aero Precision. No broader compatibility list is provided, so fit should be verified for the specific build.

What comes in the package?

The included parts are the 8620 steel bolt assembly, 4140 steel bolt guides, grade 23 titanium firing pin, firing pin retaining pin, 4140 steel extractor, and heavy duty extractor coil pin. All parts are installed.