Aero Precision, M4E1-E Complete Upper, 5.56, Black (APAR600217M99)

What’s Included:

• M4E1 Enhanced Assembled Upper Receiver

• 12.7″ Enhanced M-LOK Free Float Handguard

• 13.9″ 5.56 NATO CMV Mid-Length Barrel

• Low Profile Gas Block + Mid-Length Gas Tube

• AR15 A2 Birdcage Flash Hider

• Fully assembled upper (minus BCG and charging handle)

M4E1 Upper Features:

• 7075-T6 forged aluminum, precision-machined to Aero’s M4E1 specs

• Hard coat anodized, matte black finish (Mil-Spec Type III Class 2)

• Integrated handguard mounting platform—no barrel nut timing required

• Includes port door and forward assist installed

• Accepts standard AR15/M16 components

• Works with Aero handguards and most BAR-style rails

• M4 feed ramps, laser-engraved T-marks

• Barrel nut and wrench included

Gen 2 Enhanced Handguard Highlights:

• One-piece free float design

• Anti-rotation tabs built in for stability

• Scalloped rails for comfort and grip

• Continuous Picatinny top rail with updated profile

• QD sling sockets at 3, 6, and 9 o’clock

• Inside diameter: 1.78″ — fits most suppressors and muzzle devices

• Compatible with low profile gas blocks

13.9″ 5.56 Mid-Length Barrel Specs:

• Chambered in 5.56 NATO, 1:7 twist

• 4150 CMV steel, QPQ finish

• Mid-length gas system, .750 gas block journal

• HP and MPI tested for strength and reliability

• Standard A2 flash hider

• M4 feed ramp extension