Aero Precision M4E1 Threaded PRO Complete Upper with 12.5\" 5.56 CHF Mid-Length Barrel and 10.3\" ATLAS R-ONE Handguard - Anodized Black - APUG700703M103-1

Name: Aero Precision M4E1 Threaded PRO Complete Upper with 12.5\" 5.56 CHF Mid-Length Barrel and 10.3\" ATLAS R-ONE Handguard - Anodized Black - APUG700703M103-1
Brand: Aero Precision
SKU: APUG700703M103-1
Price: 854.99 USD
Availability: OutOfStock

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$Aero Precision M4E1 Threaded PRO Complete Upper with 12.5\" 5.56 CHF Mid-Length Barrel and 10.3\" ATLAS R-ONE Handguard - Anodized Black - APUG700703M103-1 - Upper Receiver for AR-15 - view 1$

$Aero Precision M4E1 Threaded PRO Complete Upper with 12.5\" 5.56 CHF Mid-Length Barrel and 10.3\" ATLAS R-ONE Handguard - Anodized Black - APUG700703M103-1 - Upper Receiver for AR-15 - view 2$

$Aero Precision M4E1 Threaded PRO Complete Upper with 12.5\" 5.56 CHF Mid-Length Barrel and 10.3\" ATLAS R-ONE Handguard - Anodized Black - APUG700703M103-1 - Upper Receiver for AR-15$

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Aero Precision

Overview

The Aero Precision M4E1 Threaded PRO Complete Upper is designed for builders looking for a reliable and ready-to-install upper assembly. Featuring a 12.5-inch barrel chambered in 5.56 NATO with a mid-length gas system, this upper provides improved gas efficiency and reduced recoil, making it a strong choice for dynamic shooting applications. The M4E1 receiver type ensures compatibility with standard AR-15 lower receivers, while the 1/2x28 thread pitch allows for easy attachment of muzzle devices. This upper is commonly found in short-barreled rifle builds that prioritize maneuverability and performance.

Specifications

MPNAPUG700703M103-1

AssemblyComplete

Caliber5.56 NATO

Gas System LengthMid-Length

PlatformAR-15

ColorBlack

Receiver TypeM4E1

Barrel Length12.5

Thread Pitch1/2x28

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Aero Precision M4E1 Threaded PRO Complete Upper with 12.5\" 5.56 CHF Mid-Length Barrel and 10.3\" ATLAS R-ONE Handguard - Anodized Black - APUG700703M103-1

Available Merchants(1)

Prices checked Oct 11, 2026

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BattleHawk Armory

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$855

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Build history on GunPartPicker

Builders on GunPartPicker first added the Aero Precision M4E1 Threaded PRO Complete Upper with 12.5\" 5.56 CHF Mid-Length Barrel and 10.3\" ATLAS R-ONE Handguard - Anodized Black - APUG700703M103-1 to a build in August 2026.

Today the one retailer we track is out of stock. Listed prices start at $854.99 at BattleHawk Armory for when it comes back.

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Updated Oct 12, 2026 · from real builds on GunPartPicker · Prices checked Oct 11, 2026 · refreshed daily across 37 retailers