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specifications
Aero Precision
Type:Complete
Platform:AR-15
Caliber:5.56 mm NATO
Barrel Length:11.5"
- M4E1 Threaded Assembled Upper Receiver
- ATLAS S-ONE Handguard of choice
- 11.5" 5.56 CMV Barrel, Carbine Length
- Low Profile Gas Block and Carbine Length Gas Tube
- Product comes assembled
- 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 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
AR-15 M4E1-T 11.5 In Atlas S-One Complete Upper 5.56mm Blac
| Caliber | Manufacturer | Color | Weight | Merchant Price | Merchant URL | |
|---|---|---|---|---|---|---|
| 5.56 mm NATO | Aero Precision | None | None None | $429.99 | Brownells | Add |
Prices last checked September 2026. Prices and availability change often, so confirm on the retailer's site.
This complete 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. Aero Precision's 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:
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.