Receiver PartsAero PrecisionSold by Brownells

Aero Precision

Epc-9 9mm Luger Assembled Upper Receiver W/No Barrel For Ar15 - Epc 9 Threaded Upper Receiver W/ Lrbho Fde

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

Epc-9 Assembled

Upper receiver for AR9 builds

Includes Pre-installed

Last round bolt hold open

Accepts Most

AR15-compatible barrel nuts and handguards

Standard Ar15

Takedown and pivot pin lug

Machined From

Custom forged 7075-T6 aluminum

$184.99
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SKU: 100054501

Overview

Built for an AR9-style pistol caliber build, this upper receiver provides a foundation for a 9mm Luger setup without a barrel included. It features a pre-installed last round bolt hold open assembly and is designed to work with most standard AR15 barrel nut and handguard combinations, which can simplify parts selection during assembly. The standard AR15 takedown/pivot pin lug pattern and laser engraved T-marks add practical compatibility and reference points for a clean build. For hunters and shooters putting together a dedicated pistol caliber carbine, it offers a focused receiver option with a few integration details already in place.

Why Hunters Choose the Aero Precision

Includes Pre-installed

Last round bolt hold open

Accepts Most

AR15-compatible barrel nuts and handguards

Standard Ar15

Takedown and pivot pin lug

Dimple Above

Threads supports proper handguard timing

Machined From

Custom forged 7075-T6 aluminum

Key Features

  • EPC-9 assembled upper receiver for AR9 builds
  • Includes a pre-installed last round bolt hold open assembly
  • Accepts most AR15-compatible barrel nuts and handguards
  • Standard AR15 takedown and pivot pin lug pattern
  • Machined from custom forged 7075-T6 aluminum
  • Laser engraved T-marks for easier setup

Best Used For

  • AR9 builders wanting an upper receiver with last-round bolt hold open functionality
  • Shooters using standard AR15-compatible barrel nuts and handguards on pistol-caliber builds
  • Users assembling a threaded upper receiver with standard AR15 takedown and pivot pin pattern
  • Builders who want a pre-installed LRBHO assembly included with the upper receiver

Specifications

Barrel IncludedNo
Blade FinishFDE
Caliber9mm Luger
CompatibilityMost standard AR15 barrel nut and handguard combinations
Handguard Timing FeatureDimple above threads
Included ItemsUpper Receiver; Pre-installed last round bolt hold open assembly
Last Round Bolt Hold OpenYes
MaterialCustom forged 7075-T6 aluminum
PlatformAR15
Product TypeAssembled Upper Receiver
T MarksLaser engraved
Takedownpivot Pin Lug PatternStandard AR15

Pros

  • Includes a pre-installed last round bolt hold open assembly.
  • Accepts most AR15-compatible barrel nuts and handguards.
  • Standard AR15 takedown and pivot pin lug pattern.
  • Dimple above threads supports proper handguard timing.
  • Machined from custom forged 7075-T6 aluminum.
  • Laser engraved T-marks aid setup and reference.

Considerations & Trade-offs

  • No barrel is included, so this upper is intended for a separate barrel selection during the build process.
  • Compatibility is described as 'most' AR15 barrel nuts and handguards, so fit should still be verified with the specific components you plan to use.
  • The last round bolt hold open assembly is pre-installed, which adds functionality but also means one more integrated part to account for during assembly and setup.
  • This is an upper receiver only; it is meant to complete an AR9-style build rather than serve as a standalone component.

Suggested Comparisons

  • AR-9 upper receivers
  • AR-15 compatible upper receiver components
  • Pistol-caliber carbine build parts

Suggested Accessories

  • AR15-compatible barrel nut
  • AR15-compatible handguard
  • Takedown/pivot pin set
  • Upper receiver vise block

Frequently Asked Questions

What does this EPC-9 upper receiver include out of the box?

It includes the upper receiver and a pre-installed last round bolt hold open assembly.

Is this upper receiver ready for a complete build by itself?

No. The title says it is an assembled upper receiver with no barrel, so additional build components are still required.

What type of build is this upper receiver intended for?

It is described as a good addition to an AR9 build and is identified as an EPC-9 upper receiver for 9mm Luger pistol-caliber builds.

Will this upper work with standard AR15 handguards and barrel nuts?

It accepts most AR15-compatible barrel nuts and handguards, but the description does not say it works with every setup.

What material is the upper receiver made from?

The description says it is machined from custom forged 7075-T6 aluminum.