M4E1 Threaded 16" 5.56 Mid-Length No Forward Assist Complete Upper Receiver w/ 15" M-LOK ATLAS R-ONE Handguard
If you are looking for an AR15 Upper with a Mid-Length Gas System, we have the perfect choice for you! The M4E1 Threaded 16" 5.56 Mid-Length No Forward Assist Complete Upper Receiver w/ 15" M-LOK ATLAS R-ONE Handguard offers a Mid-Length Upper with a full featured M-LOK Equipment Rail.
This complete upper includes the ATLAS R-ONE Handguard! The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. The 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.
The Complete Upper Includes:
- M4E1 Threaded Assembled Upper Receiver, No Forward Assist
- 15" ATLAS R-ONE Handguard of choice
- 16" 5.56 CMV Barrel, Mid-Length Gas System
- Low Profile Gas Block and Mid-Length Gas Tube
- A2 Flash Hider
- Product comes assembled
- This complete upper does not include BCG or Charging Handle.
M4E1 Threaded, No Forward Assist Upper Receiver Features:
- No Forward Assist
- New enhanced forging that gives the upper receiver a "billet look"
- New picatinny profile that blends seamlessly with the Enhanced and Atlas 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 CMV Barrels
- Chamber: 5.56
- Length: 16"
- Twist: 1 in 7
- Threading: 1/2"x28
- Material: 4150 Chrome Moly Vanadium
- Finish: QPQ corrosion resistant finish both inside and out
- Gas Block: .750
- Gas Port: .0785
- M4 Barrel Extension
- HP and MPI Tested
- M4E1 Billet type, No Forward Assist Threaded Upper Receiver
- 16" 4150 CMV Black Nitrided Barrel with A2 Flash Hider, 15" Atlas R-ONE M-LOK Handguard
- No BCG or Charging Handle
- Comes assembled with port door assembly, low profile gas block and mid-length gas tube