The Aero Precision M4E1 Pro is an AR-pattern semi-automatic rifle chambered in 5.56x45mm with a 16-inch Hanson barrel. It ships with a MOD 4 handguard and MOE/SL furniture in Olive Drab Green. The rifle includes a 30-round magazine. 
 

Key Specifications 

• Brand: Aero Precision 
• Model: M4E1 Pro 
• Caliber: 5.56x45mm 
• Action: Semi Auto 
• Capacity: 30 rounds 
• Barrel Length: 16 inches 
• Color/Finish: Olive Drab Green 
   

Detailed Features 

• 16-inch Hanson profile barrel 
• MOD 4 handguard 
• MOE/SL furniture 
• Olive Drab Green finish throughout 
• Includes 30-round magazine

Owners of the Aero Precision M4E1 Pro regularly point to the fit and finish as a standout for a factory-built AR. The M4E1 platform has a following among builders who appreciate the tight upper-to-lower fit, and the Pro configuration delivers that in a complete rifle. The Olive Drab Green finish draws buyers specifically looking for a subdued non-black option.

The MOD 4 handguard and MOE/SL stock combination are considered functional rather than premium. Some owners swap the furniture quickly while keeping the receiver set intact. The 16-inch Hanson barrel profile is well-regarded for balancing weight and rigidity, though opinions on gas system tuning split between those who find it runs well on most ammo and those who note sensitivity to underpowered loads.

On value, the M4E1 Pro lands in a competitive tier. Buyers who want an Aero-quality receiver set without building from scratch find it a reasonable package. The common criticism is that the included accessories are entry-level and the real value is in the receivers and barrel.