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M5 18″ .308 SS Fluted Complete Upper Receiver w/ ATLAS S-ONE Handguard



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.


    • M5 (.308) Threaded Assembled Upper Receiver
    • 15″ M-LOK ATLAS S-ONE Handguard
    • 18″ .308 Fluted Stainless Steel Barrel, Rifle Length
    • Low Profile Gas Block and Rifle Length Gas Tube
    • .308 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

M5 Assembled Upper Receiver Features:

      • Forged from 7075 T6 aluminum
      • M4 Feedramps
      • .2795 takedown pin holes
      • Laser engraved T-marks
      • DPMS High Profile (.210) Tang)
      • Includes port door and forward assist

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
      • Learn More about our NEW ATLAS S-ONE Hanguards

18″ .308 Fluted Stainless Steel Barrel, Rifle Length Features:

    • .308 Winchester 18″ Barrel, 1/10 twist, 416R Stainless Steel, gas port drilled
    • .750 gas block journal
    • Rifle length gas system
    • M4 Feed Ramp Extension
    • HP and MPI tested
    • Standard .308 A2 flash hider


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