Aero Precision M4E1-T Complete Upper 5.56 NATO 16" – AR-15 Platform FDE

The Aero Precision M4E1-T Complete Upper is chambered in 5.56 NATO and features a 16-inch barrel with mid-length gas system. Built on Aero's threaded M4E1 upper receiver, this assembly is compatible with standard AR-15 lower receivers and ships ready to install. The Flat Dark Earth Cerakote finish provides corrosion resistance and a distinctive appearance for builders seeking a non-black option.

The upper includes Aero's ATLAS S-ONE M-LOK handguard for a slim profile with full-length accessory mounting. The 16-inch barrel is constructed from 4150 chrome moly vanadium steel with a 1:7 twist rate, suitable for a wide range of bullet weights from 55 to 77 grains. Upper receiver features an integrated trigger guard and tension screw for a tight fit with the lower. Includes mil-spec charging handle and forward assist. No bolt carrier group or muzzle device included—requires separate purchase for a functioning firearm.

• Caliber: 5.56 NATO / .223 Wylde
• Type: Complete Upper Receiver
• Compatible Lower: Standard AR-15
• Barrel Length: 16 inches
• Material: Forged 7075-T6 aluminum receiver, 4150 CMV barrel
• Finish: Flat Dark Earth Cerakote
• Includes: M4E1 threaded upper, 16" barrel, ATLAS S-ONE handguard, charging handle, forward assist
• Installation: Attaches to mil-spec AR-15 lower with takedown pins; BCG and muzzle device required