Aero Precision M4E1 Threaded 5.56mm Complete Upper Receiver 16in M4 Barrel 1-7 Twist A2 Flash Hider ATLAS R-ONE Handguard FDE Cerakote
All Aero Precision upper receivers
Click to see full view
Aero Precision
Overview
The Aero Precision M4E1 Threaded Complete Upper Receiver features a 16-inch M4 barrel chambered in 5.56 NATO, making it an excellent choice for a versatile AR-15 build. With a 1:7 twist rate, this barrel is optimized for stabilizing a variety of bullet weights, ensuring reliable performance across different applications. The FDE Cerakote finish not only provides a distinctive look but also enhances durability, making this upper receiver suitable for builds focused on both functionality and aesthetics.
Specifications
Aero Precision M4E1 Threaded 5.56mm Complete Upper Receiver 16in M4 Barrel 1-7 Twist A2 Flash Hider ATLAS R-ONE Handguard FDE Cerakote
Build history on GunPartPicker
Builders on GunPartPicker first added the Aero Precision M4E1 Threaded 5.56mm Complete Upper Receiver 16in M4 Barrel 1-7 Twist A2 Flash Hider ATLAS R-ONE Handguard FDE Cerakote to a build in June 2026.
It was out of stock everywhere we track for all of September 2026, and today none of the 2 retailers we track has it in stock right now. Listed prices start at $568.99 at KY Gun Company for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 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
Bravo Company M16 Bolt Carrier Group Black
Geissele Automatics AR-15 SSA-E X Lightning Bow Trigger
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!