M4E1 Threaded Complete Upper, 11.5" 5.56 Carbine-Length Barrel w/ 10.3" R-ONE M-LOK Handguard - Black/Sniper Grey

This complete upper includes our 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 Aero Taper Lock Attachment System is a durable and dependable mounting platform, maintaining a modern, slim profile while still providing the strength and stability customers have grown to love from Aero Precision handguards.

Includes:

• M4E1 Threaded Assembled Upper Receiver - Anodized Black
• 10.3" R-ONE M-LOK Handguard - Sniper Grey Cerakote
• 11.5" 5.56 CMV Barrel, Carbine Length
• Low Profile Gas Block and Carbine Length Gas Tube
• Product comes assembled
• This complete upper does not include BCG or Charging Handle. These products may be selected as add-ons under the Finish Your Build tab
• The muzzle brake that comes with this complete upper receiver is NOT pinned nor welded to this barrel.

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

R-ONE Handguard 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

11.5" 5.56 Barrel Features:

• 5.56 NATO 11.5" Barrel, 1:7 Twist Rate, 4150 CrMoV, QPQ
• Carbine-Length Barrel
• Carbine Gov Profile
• .750 gas block journal
• Carbine Length gas system, .0785 gas port
• M4 Feed Ramp Extension
• HP and MPI tested
• Standard A2 flash hider