M4E1 Threaded 16" 5.56 M4 Complete Upper Receiver w/R-ONE Handguard
Click to see full view
Aero Precision
Overview
The Aero Precision M4E1 Threaded 16" 5.56 Complete Upper Receiver is a fully assembled upper designed for the AR-15 platform, providing a seamless integration with your lower receiver. With its 16-inch barrel chambered in 5.56 NATO, this upper is optimized for versatility and performance, making it suitable for a range of shooting applications. This complete upper is commonly found in builds that prioritize both functionality and ease of assembly, appealing to builders looking for a reliable, straightforward option.
Specifications
M4E1 Threaded 16" 5.56 M4 Complete Upper Receiver w/R-ONE Handguard
Available Merchants
Price Alert
Log in to set a price alert on this product.
No Available merchants at this time.
Build history on GunPartPicker
Builders on GunPartPicker first added the Aero Precision M4E1 Threaded 16" 5.56 M4 Complete Upper Receiver w/R-ONE Handguard to a build in March 2026.
Updated · from real builds on GunPartPicker
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!