Aero Precision M4E1 Enhanced 5.56mm NATO Assembled Upper Receiver Anodized Black

Description

Product Overview

Aero Precision’s M4E1 Enhanced 5.56mm NATO assembled upper receiver starts with a one-piece forged design that integrates the handguard mounting platform into the receiver. This strengthens the free-float handguard mounting system while reducing setup steps and hardware changes. It comes assembled with the dust cover and forward assist installed, making it a clean foundation for a modular AR-15 build.

Key Features

• One-piece M4E1 forged handguard mounting platform for a rigid free-float mounting interface
• Assembled upper receiver with dust cover and forward assist installed for quick build completion
• M4 feedramps and .250 takedown pin hole configuration for standard AR-15 style operation
• Laser engraved T-marks for alignment and setup reference
• Included barrel nut and barrel nut wrench; torque spec 55 ft-lbs for consistent assembly
• Compatible with Aero Precision Enhanced and Quantum Series handguards and fits most BAR-system handguards

Build on a modern Aero M4E1 foundation and add your preferred barrel and handguard configuration for a clean, modular AR-15 upper.