Aero Precision M4E1 Enhanced 8in .300 Blackout Quantum Handguard Complete Upper Receiver

Get a complete upper assembly ready to hit the range or the range with a complete upper assembly kit featuring the Quantum Handguard! Key features include the addition of built in anti-rotation tabs, removable 4-slot picatinny rail section for front sight and a 7 mounting surface for accessories. This complete upper assembly kit is built to withstand heavy use and abuse, making it a great choice for a new build or a last-out build. Whether you need a lightweight upper for a pistol build or a strong base for a SBR, this Aero Precision M4E1 Complete Upper Receiver Assembly is the top choice. Our M4E1 conversion complete upper includes a barrel nut and charging handle, so you don't need to grab several items from different vendors. We have even drilled the barrel nut holes to make it easier to install yourself or with the help of a gunsmith. Don't hesitate to grab this incredible deal for your favorite AR/M4 platform rifle build.

Features of Aero Precision M4E1 Enhanced 8in .300 Blackout Quantum Handguard Complete Upper Receiver

• M4E1 Upper Features:
• Forged from 7075 T6 aluminum
• Precision machined to M4E1 specs
• M4 feedramps
• Matte black hard coat anodized Mil 8625 Type 3 Class 2
• Laser engraved T-marks (Anodized only)
• Comes assembled
• with port door and forward assist installed
• Accepts standard AR15/M16 components
• Handguard mounting platform is forged into the receiver
• Works with Aero Precision handguards but also fits most BAR-system handguards
• Barrel nut and wrench are included
• Quantum Handguard Features:
• 1pc free float design
• Removable 4-slot picatinny rail section for front sight
• Built in anti-rotation tabs
• 7 mounting surfaces for KeyMod accessories
• 1.78in inside diameter fits most muzzle devices and 1.5in suppressors
• Compatible with low profile gas blocks
• 8in .300 Blackout Barrel Features:
• Length: 8in
• Twist: 1 in 7
• Muzzle: 5/8x24 Threaded
• Material: 4150 Crome Moly Vanadium
• Finish: QPQ corrosion resistant finish both inside and out
• Gas Block: .750
• Gas Port: .109
• Gas System Length: Pistol
• Weight: 18oz
• M4 Barrel Extension
• HP and MPI Tested

Package Contents:

• Aero Precision M4E1 Enhanced 8in .300 Blackout Quantum Handguard Complete Upper Receiver
• Quantum Handguard of choice
• 8in .300 Blackout CMV Barrel
• Low Profile Gas Block and Pistol Length Gas Tube
• Product comes assembled
• This assembly 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. Per the National Firearms Act, the muzzle brake MUST be pinned and welded to achieve the necessary 16" as defined by the ATF for a rifle build.