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 Black

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

$138.99
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SKU: 100054500

Overview

Built for AR9 pistol-caliber builds, this upper receiver is intended for shooters assembling a 9mm Luger platform with compatible AR15 components. It includes a pre-installed last round bolt hold open assembly and is designed to accept most standard AR15 barrel nuts and handguards, which can simplify parts selection during a build. The standard takedown and pivot pin lug pattern, along with the dimple above the threads for handguard timing, support a straightforward setup. For hunters and outdoorsmen putting together a compact range or utility carbine, it offers a purpose-driven foundation without unnecessary extras.

Why Hunters Choose the Aero Precision

Includes Last

Round bolt hold open mechanism

Accepts Most

AR15-compatible barrel nuts and handguards

Standard Ar15

Takedown and pivot pin lug

Machined From

Custom forged 7075-T6 aluminum

Laser Engraved

T-marks support straightforward setup and

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 reference

Best Used For

  • AR9 builders wanting an upper receiver with last round bolt hold open functionality
  • Users pairing an EPC-9 upper with most standard AR15 barrel nut and handguard combinations
  • Pistol-caliber carbine builders needing a standard AR15 takedown and pivot pin lug pattern
  • Shooters assembling a 9mm Luger build around a pre-installed bolt hold open assembly

Specifications

Barrel Includedfalse
Blade FinishBlack
Bolt Hold OpenLast Round Bolt Hold Open (LRHBO)
Caliber9mm Luger
Handguard CompatibilityAccepts most AR15 compatible barrel nuts and handguards
Handguard Timing FeatureDimple above threads to allow for proper handguard timing
Included ItemsUpper Receiver; Pre-installed last round bolt hold open assembly
MaterialCustom forged 7075-T6 aluminum
PlatformAR15
Product TypeAssembled Upper Receiver
T MarkingsLaser engraved T-marks
Takedownpivot Pin PatternStandard AR15 takedown/pivot pin lug pattern
ThreadingThreaded upper receiver

Pros

  • Includes a last round bolt hold open mechanism for AR9 builds.
  • 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 support straightforward setup and reference.
  • Pre-installed LRBHO assembly included with the upper receiver.

Considerations & Trade-offs

  • Sold as an upper receiver only; the barrel is not included, so the build still requires compatible caliber-specific components.
  • Designed around most AR15-compatible barrel nuts and handguards, but fitment still depends on the specific parts selected.
  • The pre-installed last round bolt hold open assembly adds convenience, but it also means one more integrated component to account for during assembly and setup.
  • Intended for AR9/pistol-caliber builds, so it is not a universal upper for standard rifle-caliber configurations.

Suggested Comparisons

  • AR-15 pattern upper receivers
  • 9mm pistol-caliber carbine upper receivers
  • AR9 build components
  • Handguards and barrel nut assemblies

Suggested Accessories

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

Frequently Asked Questions

Does this EPC-9 upper include a barrel?

No. The title identifies it as a no-barrel upper receiver, and the included items list only the upper receiver and a pre-installed last round bolt hold open assembly.

What type of build is this upper intended for?

It is described as an EPC-9 upper receiver for an AR9 build and a pistol caliber build.

Does it have last round bolt hold open?

Yes. The listed features include an LRHBO, and the included items mention a pre-installed last round bolt hold open assembly.

Will it work with standard AR15 handguards and barrel nuts?

The product states it accepts most AR15-compatible barrel nuts and handguards. It does not claim compatibility with every setup, so fit should be confirmed against your chosen parts.

What material is the upper receiver made from?

The product states it is machined from custom forged 7075-T6 aluminum.