Aero Precision M4E1-T 300BLK Partial Upper Receiver w/ Atlas R-One Handguard - 10" Black

This complete upper includes Aeros new ATLAS R-ONE Handguard! The R-ONE line of handguards are designed with size and weight in mind, providing the perfect addition to your lightweight build. Their 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.

Includes:

• Low Profile Gas Block and pistol Length Gas Tube
• Product comes assembled
• This complete upper does not include BCG or Charging Handle. 
• 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 their Enhanced Series Handguards
• M4 Feedramps
• .250 takedown pin holes
• Laser engraved T-marks
• Includes port door and forward assist installed

ATLAS R-ONE 9" M-LOK Handguard Features:

• New enhanced forging that gives the upper receiver a "billet look"
• New picatinny profile that blends seamlessly with their Enhanced Series Handguards
• M4 Feedramps
• .250 takedown pin holes
• Laser engraved T-marks
• Includes port door and forward assist installed

10" .300 Blackout Barrel Features:

• Length: 10"
• Twist: 1 in 7
• Muzzle: 5/8x24 Threaded
• Material: 4150 Crome Moly Vanadium
• Finish: QPQ corrosion resistant finish both inside and out
• Gas Block: .750
• Gas Port: .0935
• Gas System Length: Pistol
• Weight: 21oz
• M4 Barrel Extension
• HP and MPI Tested

Specifications:

• Platform: AR15
• Series: ATLAS
• Caliber: .300 Blackout
• Barrel Length: 10"
• Weight: 41.3 oz