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Made in USA
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Product Info for Aero Precision M4E1 R-ONE, AR15, 5.56mm, 8in, M-LOK Threaded Upper Receiver
This complete upper includes our 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. Our 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.![]()
Specifications for Aero Precision M4E1 R-ONE, AR15, 5.56mm, 8in, M-LOK Threaded Upper Receiver:
| Manufacturer: | Aero Precision |
| Caliber: | 5.56mm |
| Barrel Length: | 8 in |
| Barrel Profile: | DRP |
| Gas System Length: | Pistol Length |
| Barrel Twist Rate: | 1-7 |
| Firearms Threads Per Inch: | 1/2x28 |
| Handguard Type: | Free-Float |
| Muzzle Device: | A2 Flash Hider |
| Gun Model: | AR-15 |
| Fabric/Material: | 7075-T6 Aluminum |
| Gas Block Journal Size-Diameter: | .750 in |
| Handguard Length: | 7.3 in |
| Handguard Style: | M-LOK ATLAS R-ONE |
| Gun Rail: | M-LOK |
| Gun Type: | Rifle |
| Gun Make: | AR Platform, Aero Precision |
| Barrel Material: | 416R Stainless Steel |
| Weight: | 4 lb |
| Bolt Carrier Group Included: | No |
| Charging Handle Included: | No |
| Magazine Included: | No |
| Condition: | New |
| Country of Origin: | USA |
Features of Aero Precision M4E1 R-ONE, AR15, 5.56mm, 8in, M-LOK Threaded Upper Receiver:
- 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
- Learn More about our NEW ATLAS Handguards
- 8" 5.56 Pistol Length Barrel Features:
- Chamber: 5.56
- Length: 8"
- Twist: 1 in 7
- Threading: 1/2"x28
- Material: Chrome Moly Vanadium
- Finish: QPQ corrosion resistant finish both inside and out
- Gas Block: .750
- Gas System Length: Pistol
- Weight: 17.76 oz
- M4 Barrel Extension
- HP and MPI Tested
Package Contents:
- Aero Precision M4E1 R-ONE, AR15, 5.56mm, 8in, M-LOK Threaded Upper Receiver
- M4E1 Threaded Assembled Upper Receiver
- 7.3" M-LOK ATLAS R-ONE Handguard
- 8" 5.56 Pistol Length CMV Barrel
- Low Profile Gas Block and Pistol Length Gas Tube
- Product comes assembled
Aero Precision M4E1 R-ONE, AR15, 5.56mm, 8in, M-LOK Threaded Upper Receiver Orderable Models
List of Orderable Models
- Aero Precision M4E1, AR15, 5.56mm, 8in, M-LOK Threaded Upper Receiver, Pistol Length, 1-7 Twist, 1/2x28, A2 Flash Hider, 7.3in M-LOK R-ONE Handguard, Anodized, Black, APAR700701M102 , MPN: APAR700701M102 , UPC: 840014618859 , Code: 29D-UFH-ZXCNIAA-APAR700701M102
- Aero Precision M4E1, AR15, 5.56mm, 8in, M-LOK Threaded Upper Receiver, Pistol Length, 1-7 Twist, 1/2x28, A2 Flash Hider, 7.3in M-LOK R-ONE Handguard, Cerakote, FDE, APAR700711M102 , MPN: APAR700711M102 , UPC: 840014618866 , Code: 29D-UFH-ZXCNIAA-APAR700711M102