M4E1-T 300 Blackout Complete Uppers - M4E1 300BLK Assembled Upper 10''''BBL Threaded W/RM9.3'''' Hg FDE
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Aero Precision
Overview
The Aero Precision M4E1-T 300 Blackout Complete Upper is a fully assembled upper receiver designed for the AR-15 platform, featuring a 10-inch barrel optimized for the 300 Blackout caliber. This upper receiver comes in a Flat Dark Earth (FDE) finish, making it a stylish addition to your build while offering excellent performance and reliability. Commonly found in builds focused on 300 Blackout, this upper is ideal for those looking to maximize their firearm’s versatility in both suppressed and unsuppressed configurations.
Specifications
M4E1-T 300 Blackout Complete Uppers - M4E1 300BLK Assembled Upper 10''''BBL Threaded W/RM9.3'''' Hg FDE
Available Merchants(4)
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Build history on GunPartPicker
Builders have been adding the Aero Precision M4E1-T 300 Blackout Complete Uppers - M4E1 300BLK Assembled Upper 10''''BBL Threaded W/RM9.3'''' Hg FDE to their builds on GunPartPicker since February 2026. All time, it ranks #271 of the 1,654 upper receivers builders have added. Builds with this upper receiver are nearly all chambered in 300 Blackout and nearly all AR-15.
It was out of stock everywhere we track for all of September 2026, and today none of the 4 retailers we track has it in stock right now. Listed prices start at $543.99 at KY Gun Company for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
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Frequently Built With
The part most often added in each category by the builds that include this one
PSA Complete Lower 300BO, JAKL, MOE EPT w/o Brace, FDE
Aero Precision AR-15 Breach Charging Handle Ambidextrous Small Levers
SB Tactical HBPDW 9mm Stabilizing Brace With Buffer Assembly, Black - HBAR9-01-SB
Geissele Automatics AR-15 SSA-E X Lightning Bow Trigger
EOTECH XPS2 Holographic Sight, Tan - XPS2-0TAN
Fortis SHIFT Vertical Grip - M-LOK
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