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Includes:

  • M4E1 Threaded Assembled Upper Receiver - Anodized Black
  • 15" ATLAS R-ONE Handguard
  • 16" 5.56 CMV Barrel
  • .750 Adjustable Gas Block and Mid-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

16" 5.56 Mid-Length Barrel Features:

  • 5.56 NATO 16" Midlength, 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