This assembled upper includes Aero Precision’s new 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. 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.
FEATURES:
- M4E1 Threaded Assembled Upper Receiver
- 7"" M-LOK ATLAS S-ONE Handguard with 7” .300 Blackout CMV Barrel OR
- 9"" M-LOK ATLAS S-ONE Handguard with 10"" .300 Blackout CMV Barrel OR
- 12"" M-LOK ATLAS S-ONE Handguard with 16"" .300 Blackout CMV Barrel
- Low Profile Gas Block and Pistol Length Gas Tube in all makeups.
- This assembled upper does not include BCG or Charging Handle.
- The muzzle brake that comes with this assembled 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 Aero's 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
- 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
8" .300 Blackout Barrel Features:
- Length: 8""
- 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: .109
- Gas System Length: Pistol
- Weight: 18 oz
- M4 Barrel Extension
- HP and MPI Tested
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: 21
- M4 Barrel Extension
- HP and MPI Tested
16” .300 Blackout Barrel Features:
- Chamber: .300 Blackout
- Length: 16""
- Material: 4150 Chome Moly Vanadium
- Finish: QPQ Corrosion Resistant Finish
- Gas System Length: Pistol
- Gas Block Journal: .750""
- Twist Rate: 1:7 Inches
- Muzzle: 5/8x24 Threaded
- Weight: 29 oz
- M4 Feed Ramp Extension, HP and MPI Tested, Standard A2 Flash Hider
