Aero Precision APAR501801AC Assembled Receiver Multi-Caliber 7075-T6 Aluminum Flat Dark Earth Cerakote Receiver for AR-15

The Aero Precision AR-15 assembled upper receiver is a precision-machined component built for shooters who demand mil-spec reliability without compromise. Forged from 7075-T6 aluminum and machined to M16/M4 specifications, this upper arrives pre-assembled with the port door and forward assist already installed—saving you time on the workbench and letting you focus on building or upgrading your rifle. The Flat Dark Earth Cerakote finish delivers a professional look that resists wear and corrosion, making it equally at home on a duty rifle, a precision build, or a hunting platform.

This upper is designed to work seamlessly with any standard AR-15 lower receiver in your collection, whether you're running a new build, a conversion, or a multi-caliber platform. The M4 feedramps ensure reliable feeding across common rifle calibers, while the .250 takedown pin holes guarantee a secure fit with standard components. Laser-engraved T-marks provide a professional reference point and add another layer of authenticity to your build.

If you're assembling a rifle from the ground up or swapping uppers across multiple lowers, the Aero Precision assembled upper eliminates guesswork. You get a forged-aluminum component machined to proven military standards, ready to pair with your choice of barrel, handguard, and bolt carrier group. Build smart, build once.

Key Features

• Pre-assembled with port door and forward assist installed
• Precision machined from 7075-T6 forged aluminum to mil-spec M16/M4 standards
• M4 feedramps for reliable feeding
• .250 takedown pin holes for secure fit with standard AR-15 components
• Laser-engraved T-marks for reference and authenticity
• Flat Dark Earth Cerakote finish resists corrosion and wear
• Compatible with standard AR-15/M16 parts and barrels

Specifications

Frequently Asked Questions

What's included with the upper receiver?

The assembled upper ships with the port door and forward assist already installed. You receive a complete, ready-to-assemble upper receiver—no additional small parts to hunt down.

Will this upper work with my existing AR-15 lower receiver?

Yes. This upper is compatible with any standard AR-15 or M16 lower receiver. The .250 takedown pin holes and mil-spec dimensions ensure a proper fit across the board.

What calibers can I run with this upper?

The M4 feedramps and mil-spec design support common rifle calibers. Your caliber compatibility depends on the barrel you select to pair with this upper.

Is this upper suitable for long-range or hunting builds?

Absolutely. The forged 7075-T6 aluminum construction and mil-spec machining provide the precision and durability needed for hunting, target, and precision rifle applications.