Aero Precision M4E1 Threaded 10.5" 5.56 Complete Upper Receiver w/ ATLAS S-ONE Handguard - Anodized Black - APAR700302M2

Aero Precision APAR700302M2: This complete upper includes Aero Precision's 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. Aero Precision's 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. This complete upper does not include BCG or Charging Handle.

Includes:

• M4E1 Threaded Assembled Upper Receiver
• ATLAS S-ONE Handguard of choice
• 10.5" 5.56 CMV Barrel
• Low Profile Gas Block and Carbine Length Gas Tube
• Product comes assembled
• The muzzle brake that comes with this complete upper receiver is NOT pinned nor welded to this barrel.

• 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 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

    10.5" 5.56 Barrel Features:

    • 5.56 Nato 10.5" 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