Aero Precision M4E1 Complete Upper, 18" .223 Wylde SS Rifle Barrel, EM-15 Quantum Handguard - Anodized Black - APAR640105M42

This Complete Upper includes our 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.

Includes:

• M4E1 Enhanced Assembled Upper Receiver
• Quantum Handguard of choice
• 18″ .223 Wylde Rifle Length Stainless Steel 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

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
• 1.78″ inside diameter fits most muzzle devices and 1.5″ suppressors
• Compatible with low profile gas blocks

18″ .223 Stainless Steel Rifle Length Barrel Features:

• .223 Wylde 18″ Rifle Length Barrel, 1/8 Twist
• 416R Stainless Steel
• Bead Blasted Finish
• .750 gas block journal
• Rifle length gas system
• M4 Feed Ramp Extension
• HP and MPI tested
• Standard A2 flash hider

Specifications:

• Shipping to FFL Dealer Required No
• Made In America? Yes
• Platform AR15
• Series M4E1
• Caliber .223 Wylde
• Barrel Length 18″

Weight	68.5 oz
Barrel Finish	Nitride / Melonite
Barrel Profile	M4
Gas System Length	Rifle
Barrel Length (inches)	18
Barrel Chamber	.223 Wylde
Twist Rate	1-8
BCG / Charging Handle	Not Included
MPN	APAR640105M42
UPC	840014603909