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. 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.
FEATURES:
- M4E1 Threaded Assembled Upper Receiver
- Choice of 12” or 15” M-LOK ATLAS S-ONE Handguard
- 16" 5.56 Mid CMV Barrel, 18” Rifle Barrel
- Low Profile Gas Block and Mid-Length/Rifle Length Gas Tube Depending on Configuration
- Product comes assembled
- This assembled upper does not include BCG or Charging Handle
- 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
11.5" Barrel Features- 5.56 Nato 11.5" Barrel, 1/7 twist, 4150 CrMoV, QPQ, gas port drilled
- Government Profile
- .750 gas block journal
- Carbine length gas system, .0785 gas port
- M4 Feed Ramp Extension
- HP and MPI tested
- Standard A2 flash hider
16" 5.56 Mid Barrel Features:
- 5.56 NATO 16" Barrel, 1/7 twist, 4150 CrMoV, QPQ, gas port drilled
- Mid-length gas system, .0785 gas port
- M4 Feed Ramp Extension
- HP and MPI tested
- Standard A2 flash hider
18" 5.56 Rifle Length Barrel Features:
- 5.56 Nato 18" Rifle Length Barrel
- 4150 CrMoV w/ QPQ finish
- 1/7 twist
- .750 gas block journal
- Rifle length gas system
- M4 Feed Ramp Extension
- HP and MPI tested
- Standard A2 flash hider
Restricted Part
Please check with your state regulations for ownership of Restricted Parts. May require documentation.
