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M4E1 Threaded Complete Upper, 11.5" 5.56 Barrel W/ ATLAS R-ONE (W BCG AND CH)

M4E1 Threaded Complete Upper, 11.5" 5.56 Barrel W/ ATLAS R-ONE (W BCG AND CH)


This complete upper bundle has everything you need to hit the ground running on your next build! Included ATLAS Handguard, Black Nitride BCG, BREACH Ambidextrous Charging Handle, and VG6 Gamma Muzzle Device give you all the upgrades you need out of the box!


  • M4E1 Threaded Assembled Upper Receiver - Anodized Black
  • 10.3" ATLAS R-ONE Handguard
  • 11.5" 5.56 CMV Barrel
  • Low Profile Gas Block and Carbine Length Gas Tube
  • AR15 BREACH Ambidextrous Charging Handle (Large Lever)
  • Black Nitride 5.56 Bolt Carrier Group
  • VG6 Gamma 556 Muzzle Device

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

11.5" 5.56 Mid-Length Barrel Features:

  • 5.56 NATO 11.5" Carbine Llength, 1/7 twist, 4150 CrMoV, QPQ, gas port drilled
  • .750 gas block journal
  • Mid-length gas system, .0785 gas port
  • M4 Feed Ramp Extension
  • HP and MPI tested


Country of Manufacture United States
License Requirement None
Manufacturer Aero Precision
Mfg. Part Number APSL100385
UPC APSL100385
Caliber/Gauge 5.56x45
Barrel Length 11.5"
Barrel Twist 1:7
Barrel Finish QPQ Corrosion Resistant
Firearm Fit AR-15
Threaded Barrel Yes
Condition New
    $781.97 Regular Price
    $649.04Sale Price
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