Shop our Sale Page! New Items Added Daily!

Aero Precision M4E1 Complete Upper .300 AAC Blackout 8" Barrel

The Aero Precision M4E1 Complete Upper comes with an 8" .300 blackout barrel, low profile gas block, and a pistol length gas tube. This Upper comes assembled with a port door and forward assist installed. The muzzle break that comes with this complete upper receiver is not pinned or welded to the barrel. Get the best Upper Receiver for the lowest price at GrabAGun today!
$385.99
In stock
SKU
GAG_QJAPAR640101M1

Shoot Now, Pay Later®

Easier approval. $0 Down. Easy installments up to 60 months. Approvals up to $10,000. No hard credit inquires for Pre-Approval. Apply and Buy Today!

Shoot Now, Pay Later® 4 Pay

Pay in 4. Four Payments, no interest for purchases between $150 to $700. No hard credit inquires for Pre-Approval. Apply and Buy Today!

Shoot Now, Pay Later® 4 Pay and Traditional Financing

Try Pay in 4 at 0% interest for purchases between $150 to $700. Or Select Easy installments up to 60 months. Approvals up to $10,000. No hard credit inquires for Pre-Approval. Apply and Buy Today!

Launch shoot now pay later
More Information

Aero Precision M4E1 Complete Upper Features

This Aero Precision 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. The barrel has a length of 8", a threaded muzzle of 5/8x24 Threaded, and 4150 Crome Moly Vanadium material. This pistol length barrel also features an M4 Barrel Extension and is chambered in .300 Blackout. It accepts standard AR15/M16 components and comes assembled with a port door and forward assist installed. The handguard mounting platform is forged into the receiver. 

Aero Precision M4E1 Complete Upper Specifications

  • Barrel Length: 8"
  • Twist: 1 in 7
  • Muzzle: 5/8x24 Threaded
  • Material: 4150 Crome Moly Vanadium
  • Finish: QPQ corrosion resistant finish both inside and out
  • Gas Block: .750
  • Gas Port: .109
  • Gas System Length: Pistol
  • Weight: 18oz
  • M4 Barrel Extension: Yes
  • Caliber: .300 Blackout
  • Material: 7075 T6 Aluminum
More Information
Barrel Length 8
Caliber .300 AAC Blackout
Condition New in Box
Finish Per Color Black
Manufacturer Aero Precision
Manufacturer Part Number APAR640101M1
Model M4E1 Complete Upper
Type Uppers
UPC 840014603947

WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to WWW.P65WARNINGS.CA.GOV

Questions And Answers
Reviews
Due to increased state legislation around firearms, you must be 18 to access our site.
Are you at least 18 years old?