Aero Precision M4E1 Complete Upper 20" 5.56 Rifle Barrel EM-15 Quantum Handguard - Anodized Black - APAR640105M48

This Complete Upper includes Aero Precision’s 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.

Specifications:

• Cartridge: 5.56x45mm NATO
• Barrel Twist Rate: 1-7
• Handguard Length: 15 in
• Gun Rail: M-LOK
• Muzzle Device: A2 Flash Hider
• Gun Model: AR-15
• Included Accessories: Standard
• Condition: New

Features:

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

18in 5.56 Rifle Length Barrel Features:

• 5.56 Nato 18in 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

Included Accessories:

• M4E1 Enhanced Assembled Upper Receiver
• Enhanced Handguard of choice
• 18in 5.56 Rifle Length CMV Barrel
• Low Profile Gas Block and Rifle 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