Aero Precision M4E1 Barreled Upper, 12.5" 5.56 Barrel, 12" M-LOK ATLAS S-ONE

Average Rating: Total Reviews: 0 Write a Review
Product Code: APAR700304M30
Stock Status Stock Status: Out of Stock
List Price: $484.99
Our Price: $484.99
Sale Price: Deal of the Day: $464.99
Savings: $20.00
Click for Price

Out of stock

M4E1 Barreled Upper, 12.5" 5.56 Barrel, 12" M-LOK ATLAS S-ONE

This barreled upper includes our new ATLAS S-ONE Handguard! The S-ONE line of handguards are designed with size and weight in mind, providing the perfect addition to your lightweight build. Our proprietary ATLAS attachment system is a durable and dependable mounting platform, maintaining a slim profile while still providing the strength and stability customers have grown to love from Aero Precision handguards.

Be sure to use the link below to choose a BCG and charging handle as this upper does not come with either.

Click here for Charging Handles

Click here for Bot Carrier Groups

  • M4E1 Threaded Assembled Upper Receiver
  • 12" M-LOK ATLAS S-ONE Handguard
  • 12.5" 5.56 CMV Barrel
  • Low Profile Gas Block and Carbine Length Gas Tube
  • AR15 A2 Birdcage Flash Hider
  • Product comes assembled
The muzzle brake that comes with this upper receiver is NOT pinned nor welded to this barrel.
This upper does not include BCG or Charging Handle.

ATLAS S-ONE Handguard Features:
  • Front and rear picatinny rail
  • Eliminated center of top rail for weight reduction
  • Indexing grooves in 12:00 position for positive grip control
  • Quick disconnect sling socket at the 3, 6 and 9 o'clock positions
  • Compatible with low profile gas blocks
  • 1.3'' Inside diameter
  • 1.5'' Outside diameter
  • Compatible with mil-spec AR15 upper receivers and barrels

12.5" 5.56 Barrel Features:
  • 5.56 Nato 12.5" Barrel, 1/7 twist, 4150 CrMoV, QPQ, gas port drilled
  • .750 gas block journal
  • Carbine length gas system, .0785 gas port
  • M4 Feed Ramp Extension
  • HP and MPI tested
  • Standard A2 flash hider
All NFA/ATF Rules Apply

Depending on your state and local laws, you could use this barrel with a lower receiver that is a Registered SBR, or Pistol. Possession of this barrel along with a Non-NFA lower receiver may be Prohibited. We are not lawyers and the above information is not legal advise. Make sure you understand the most up to date federal, state and local laws before proceeding with this product.

Maximum Purchase:
5 units