Description

Aero Precision – M4E1 Threaded Complete Upper – 12.5″ – 5.56 Carbine Length Barrel w/ 10.3″ R-ONE M-LOK HG – Anodized Black

This complete upper includes our 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.

Includes:

• • M4E1 Threaded Assembled Upper Receiver
  • 10.3″ M-LOK ATLAS S-ONE Handguard
  • 12.5″ 5.56 Government Profile CMV Barrel, Carbine Length
  • Low Profile Gas Block and Carbine Length Gas Tube
  • AR15 A2 Birdcage Flash Hider
  • Product comes assembled
  • This complete upper does not include BCG or Charging Handle. These products may be selected as add-ons under the Finish Your Build tab

M4E1 Threaded Upper Receiver Features:

• • • New enhanced forging that gives the upper receiver a “billet look”
    • New picatinny profile that blends seamlessly with our Enhanced Series Handguards
    • M4 Feedramps
    • .250 takedown pin holes
    • Laser engraved T-marks
    • Includes port door and forward assist installed

ATLAS R-ONE Handguard Features:

• • • Full top picatinny rail for optional attachments
    • 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