Aero Precision M4E1 Complete Upper .300 Blackout 10 Barrel EM-9 Gen 2 Handguard
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Aero Precision
Overview
The Aero Precision M4E1 Complete Upper is designed specifically for the AR-15 platform and features a 10-inch barrel chambered in .300 Blackout, making it suitable for a variety of shooting applications, particularly in short-range scenarios. The upper receiver, utilizing the M4E1 design, allows for easy installation and provides a streamlined aesthetic while the 5/8x24 thread pitch accommodates a range of muzzle devices. This complete upper is particularly popular in builds focused on .300 Blackout, giving builders a reliable option for both suppressed and unsuppressed configurations.
Specifications
Aero Precision M4E1 Complete Upper .300 Blackout 10 Barrel EM-9 Gen 2 Handguard
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Build history on GunPartPicker
Builders on GunPartPicker first added the Aero Precision M4E1 Complete Upper .300 Blackout 10 Barrel EM-9 Gen 2 Handguard to a build in February 2026.
Updated · from real builds on GunPartPicker
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