Aero Precision M4E1 Threaded .223 Wylde Complete Upper Receiver 18in 1-8 Twist A2 Flash Hider 15 in M-LOK ATLAS R-ONE Handguard FDE Cerakote
Click to see full view
Aero Precision
Overview
The Aero Precision M4E1 Threaded Complete Upper Receiver is designed for the AR-15 platform and features an 18-inch barrel with a 1:8 twist rate, optimal for stabilizing a range of bullet weights in .223 Wylde caliber. This upper assembly comes in a Flat Dark Earth (FDE) finish and includes an A2 flash hider, making it a practical choice for both performance and aesthetics. Typically, you'll find this upper in builds focusing on .223 Wylde, allowing for versatility in ammunition selection.
Specifications
Aero Precision M4E1 Threaded .223 Wylde Complete Upper Receiver 18in 1-8 Twist A2 Flash Hider 15 in M-LOK ATLAS R-ONE Handguard FDE Cerakote
Build history on GunPartPicker
Builders on GunPartPicker first added the Aero Precision M4E1 Threaded .223 Wylde Complete Upper Receiver 18in 1-8 Twist A2 Flash Hider 15 in M-LOK ATLAS R-ONE Handguard FDE Cerakote to a build in February 2026.
Today the one retailer we track is out of stock. Listed prices start at $564.99 at Optics Planet for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
Not sure which upper receiver to pick?
We ranked every upper receiver by how often it shows up in real builds on GunPartPicker.
Read the guide: Most Popular AR-15 Upper Receivers →Check it against the live catalog:
Frequently Built With
Popular alongside upper receivers on GunPartPicker
Aero Precision M4E1 Complete Lower Receiver W/MOE SL Grip & SL-S Carbine Stock
Aero Precision AR-15 Breach Charging Handle Ambidextrous Small Levers
Geissele Automatics AR-15 SSA-E X Lightning Bow Trigger
Bravo Company M16 Bolt Carrier Group Black
Magpul AFG-2 Angled Fore Grip - Black
Magpul AR-15 MOE Stock Collapsible Mil-Spec Black
No reviews yet. Be the first to review this product!