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Aero Precision 16" FDE M4E1 300BLK AR15 Upper Quantum MLOK .300 Blackout M-LOK
Aero Precision 16' FDE M4E1 300BLK AR15 Upper Quantum MLOK .300 Blackout M-LOK

Aero Precision 16" FDE M4E1 300BLK AR15 Upper Quantum MLOK .300 Blackout M-LOK

Part Number:APAR640114M14
On sale: $506.99
Retail Price:$539.99
You Save:$33.00(6%)
In Stock.

Choose Options

One 5 Slot Aluminum Magpul Rail [+$18.95]
Two 5 Slot Aluminum Magpul Rails [+$36.95]
Three 5 Slot Aluminum Magpul Rails [+$53.95]
Add Milspec Charging Handle [+$13.95]
Add VTS Milspec Nitrided BCG [+$99.95]
Add Aero Ambi Charging Handle [+$74.95]
Add Aero Nitrided M16 BCG [+$159.95]
Add Brownells M16 Titanium Nitride BCG [+$199.95]
Aero Precision 16" FDE M4E1 300BLK AR15 Upper Quantum MLOK .300 Blackout M-LOK


This Complete Upper includes the Quantum Handguard! Key features include the addition of built in anti-rotation tabs, removable 4-slot picatinny rail section for front sight and a 7 mounting surface for accessories.

M4E1 Enhanced Assembled Upper Receiver
Enhanced 12" Quantum MLOK Handguard
16" .300 Blackout CMV Barrel
Low Profile Gas Block and Pistol Length Gas Tube
Product comes assembled
This complete upper does not include BCG or Charging Handle unless Added. 

M4E1 Upper Features:
Forged from 7075 T6 aluminum
Precision machined to M4E1 specs
M4 feedramps
FDE Cerakoted Mil 8625 Type 3 Class 2
Comes assembled, with port door and forward assist installed
Accepts standard AR15/M16 components
Handguard mounting platform is forged into the receiver
Works with Aero Precision handguards but also fits most BAR-system handguards
Barrel nut and wrench are included

Quantum Handguard Features:
1pc free float design
Removable 4-slot picatinny rail section for front sight
Built in anti-rotation tabs
7 mounting surfaces for M-LOK accessories
1.78" inside diameter fits most muzzle devices and 1.5" suppressors
Compatible with low profile gas blocks

Barrel Features:
Chamber: .300 Blackout
Length: 16"
Material: 4150 Chome Moly Vanadium
Finish: QPQ Corrosion Resistant Finish
Gas System Length: Pistol
Gas Block Journal: .750"
Twist Rate: 1:7 Inches
Muzzle: 5/8x24 Threaded
Weight: 29oz
Other; M4 Feed Ramp Extension, HP and MPI Tested, Standard A2 Flash Hider

Shipping to FFL Dealer RequiredNo
Made In America?Yes
Caliber.300 Blackout
Barrel Length16"
Weight(s)3lbs 9.9oz

Customer Reviews

5 Stars
The Aero 300 blackout 16" fulfilled my expectations as I hoped as I have been shooting Aero products for 10+ years. Once I got the upper installed on my lower and some range time, I took a 110lb doe with it 2 weeks ago during Michigan Deer season, drooped it with one shot with 150gr Winchester Deer loads at 50 feet. The only minor issue I have is the rifle prefers heavy grained bullets 200gr or better with the 1/7 twist, however I am not running a suppressor for the back pressure so sub loads will not cycle. Just bought a adjustable gas regulator to fix this pressure. I expected this issue however so I was not surprised by it. The above zero target was shot at 50 feet standing braced on one of my local ranges. Thanks again for getting this order quickly shipped.
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Reviewed by:  from Michigan. on 11/29/2021

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