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The M4E1 upper receiver is a one-piece design combining the handguard mounting platform with the upper itself. Through superior engineering, we have condensed the parts needed to mount a free-floated handguard to a mere 8 screws. Since the handguard mounting surface and upper are of the same forging, not only is it a stronger system, but we are able to make additional lightening cuts to save weight and allow for more efficient cooling.
Ease of installation - Simply insert your barrel assembly into the M4E1 upper, tighten it using the provided barrel nut and wrench, slide your rail on and tighten the rail screws. Within minutes you have a modular, free-floated rail.
Features:
M4 Feedramps
.250 takedown pin holes
Lazer engraved T-marks
Comes assembled, with dust cover and forward assist installed
M4E1 Specific Details:
Handguard mounting platform is forged into the receiver
Compatible with Aero Precision Enhanced and Quantum Series handguards but also fits most BAR-system handguards
Barrel nut and wrench are included
These uppers are not piston-kit compatible
Will support barrels with a diameter up to 1"
Includes:
AR15 M4E1 Upper Receiver in Anodized Black
Port Door and Forward Assist installed
Barrel nut
Barrel nut wrench
More Information
Caliber
5.56
Condition
New in Box
Finish Per Color
Black
Manufacturer
Aero Precision
Manufacturer Part Number
APAR600201AC
Model
M4E1 Enhanced Upper Receiver
Type
Uppers
UPC
815421022339
WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to WWW.P65WARNINGS.CA.GOV
