MPN: APAR700305M73

Features:

• Caliber: 5.56 NATO / .223 Rem.
• Chamber: .223 Wylde
• Finish: Type III Class 2 Hardcoat Anodized or Cerakoted Flat Dark Earth
• Upper Receiver: Aero Precision M4E1 Threaded Upper - 7075-T6 Aluminum
• Handguard: 15" ATLAS S-ONE M-LOK Handguard
• M4 Feed Ramps: Yes
• Muzzle Device: A2 Flash Hider
• Barrel: 18" 1:8 QPQ Coated 416R Stainless Steel Barrel
• Muzzle Thread Pattern: 1/2"-28 TPI
• Gas Block: Aero .750" Low-Profile Gas Block
• Gas Tube: Rifle-Length Gas Tube
• Bolt Carrier Group: Not Included
• Charging Handle: Not Included
• HP and MPI Tested

*This upper assembly does not come with Bolt Carrier Group and Charging Handle

Specifications:

• Weight: ~4.4 lbs.
• Length: ~26.5"

Compatibility:

• AR-15 lower receiver

Includes:

• 1x Aero Precision 18" M4E1 .223 Wylde Upper Assembly w/ 15" Handguard

Details:

The Aero Precision M4E1-T Complete Upper is a solid choice for AR-15 enthusiasts who want precision, durability, and versatility all in one package. Chambered in .223 Wylde, it handles both .223 Remington and 5.56 NATO, making it perfect for everything from precision shooting to casual range days.

Built for Reliable Performance

At the core of this upper is an 18-inch stainless steel barrel with a QPQ finish. This rugged coating resists corrosion and wear, so you can count on your rifle to perform in challenging conditions. Paired with a rifle-length gas system, it ensures smooth cycling and reduced recoil—giving you a more comfortable and consistent shooting experience.

Thoughtful Features, Practical Design

The M4E1 Threaded Upper Receiver combines a clean, billet-like look with practical functionality. M4 feed ramps ensure reliable operation, and the laser-engraved T-marks make it easy to mount and adjust optics. Whether you’re dialing in a scope or swapping accessories, this upper simplifies your setup.

The lightweight 15-inch M-LOK ATLAS S-ONE Handguard adds agility without sacrificing stability. Indexing grooves at the 12 o’clock position offer a solid grip, and the integrated QD sling sockets make it easy to adapt to any shooting style. It’s a design built with shooters in mind—light enough for quick handling, but tough enough for serious use.

Ready for Customization

This upper doesn’t include a bolt carrier group (BCG) or charging handle, giving you the freedom to choose components that fit your needs. It’s compatible with Mil-Spec AR-15 lower receivers, ensuring a secure and reliable fit. Whether you’re building your first rifle or upgrading a trusted setup, this upper offers flexibility for customization.

Why It’s Worth Adding to Your Build

The M4E1-T Complete Upper isn’t just about looks—it’s built to perform. Whether you’re hitting steel at long distances, working on tight groupings, or just enjoying a day at the range, this upper delivers the accuracy and reliability you need.

If you’re ready to elevate your AR-15, the Aero Precision M4E1-T Complete Upper is a proven choice that won’t disappoint.