The art m5e1 platform starts here, with the m5e1 upper receiver.The m5e1 upper receiver is a one-piece design combining the handguard mounting platform with the upper itself.Through superior engineering, aero has 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.Included is a m5e1 upper receiver, port door, forward assist installed & barrel nut.

Receiver Finish: Black Anodized
Type: Semi-Complete
Sights: None, Optic Ready