Aero Precision M4E1 Threaded Complete Upper 16″ 5.56 M4 Barrel 12″ M-LOK ATLAS S-ONE Handguard (Black)


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unlimited available through backorder
SKU: APAR700304M6 Categories: , , ,


  • AR15 Gen 2 Upper Receiver Features:
  • New enhanced forging that gives the upper receiver a inbillet lookin
  • 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
  • Compatible with low profile gas blocks
  • 1.3 Inside diameter
  • 1.5 Outside diameter
  • Compatible with mil-spec AR15 upper receivers and barrels
  • Learn More about our NEW ATLAS S-ONE Hanguards
  • 16in 5.56 M4 CMV Carbine Barrel Features:
  • 5.56 Nato 16in 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
  • Included Accessories:
  • AR15 Gen 2 Assembled Upper Receiver
  • ATLAS S-ONE Handguard of choice
  • 16in 5.56 CMV Barrel
  • Low Profile Gas Block and Carbine Length Gas Tube
  • Product comes assembled
  • This complete upper does not include BCG or Charging Handle
Additional information

Additional information

Weight 5.5 lbs
Dimensions 36 × 4 × 4 in


Aero Precision

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