Aero Precision 5.56X45 Nato Assembled Upper Receiver For Ar-15 Kodiak Brown

The Aero Precision 5.56 NATO assembled upper receiver for AR-15 in Kodiak Brown is a rugged, precision-machined foundation for building or upgrading a reliable modern sporting rifle. This forged 7075-T6 aluminum upper arrives pre-assembled with the port door and forward assist already installed, saving you time and letting you focus on completing your build with a quality lower receiver. Whether you're assembling your first AR or adding to your safe, this upper delivers mil-spec accuracy in a finish designed to handle hard use.

Machined to military specification M16/M4 standards, this upper features M4 feedramps for reliable chambering across quality ammunition loads. The .250 takedown pin holes ensure proper fit with standard AR-15 components, and the laser-engraved T-marks help you index the upper correctly during assembly. At just 8.35 ounces, it won't bog down your rifle, whether you're running a lightweight hunting build or a modular tactical setup.

Aero Precision uppers are known for tight tolerances and dependable performance in the field and on the range. The Kodiak Brown anodized finish complements modern AR aesthetics while resisting corrosion and handling the bump and scrape of field use. Pair this assembled upper with an Aero Precision lower receiver—or any standard AR-15 lower—for a cohesive, properly-fitted rifle that shoots straight and runs hard.

Key Features

• Forged 7075-T6 aluminum construction, precision-machined to mil-spec M16/M4 tolerances
• M4 feedramps for reliable feeding and chambering
• Port door and forward assist pre-installed—no extra parts to source
• .250 takedown pin holes for standard AR-15 compatibility
• Laser-engraved T-marks for correct assembly indexing
• Kodiak Brown anodized finish for corrosion resistance and a rugged look
• Lightweight at 8.35 ounces

Specifications

Frequently Asked Questions

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

Yes. This upper is machined to mil-spec M16/M4 standards and features .250 takedown pin holes, making it compatible with any standard AR-15 lower receiver. Aero Precision uppers are known for tight, consistent tolerances that pair well with quality lowers.

Is the port door and forward assist included?

Yes. This is an assembled upper, meaning the port door and forward assist come already installed. You won't need to hunt for those parts separately.

What ammunition does this upper handle?

The M4 feedramps are designed to reliably feed and chamber 5.56 NATO ammunition across quality factory and handloaded rounds.

What's included in the box?

You receive the assembled AR-15 upper receiver in Kodiak Brown finish with the port door and forward assist already installed. You'll need to source a lower receiver, bolt carrier group, charging handle, and handguard to complete your rifle.