This complete upper receiver incudes an HBAR profile barrel that is laser marked "HBAR".
Includes:
M4E1 Threaded Assembled Upper Receiver
15" ATLAS S-ONE M-LOK Handguard
16" 5.56 HBAR Barrel
Low Profile Gas Block and Mid-Length Gas Tube
AR15 A2 Birdcage Flash Hider
Product comes assembled
This complete upper does not include BCG or Charging Handle.
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
Includes:
M4E1 Threaded Assembled Upper Receiver
15" ATLAS S-ONE M-LOK Handguard
16" 5.56 HBAR Barrel
Low Profile Gas Block and Mid-Length Gas Tube
AR15 A2 Birdcage Flash Hider
Product comes assembled
This complete upper does not include BCG or Charging Handle.
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