The Aero Precision M4E1-T Pro Upper Receiver Group 16" Black is a complete, ready-to-run assembly built around the M4E1 threaded upper and a rigid MOD 4 free-float M-LOK handguard. Its cold hammer forged, chrome lined 16" 5.56 NATO barrel and full-length Picatinny top rail create a stable, accurate platform that maintains point of impact even when lights, grips, and other accessories are mounted along the handguard.

This upper receiver group is well suited for building a dependable AR-15 for range use, training, or general-purpose shooting. The mid-length gas system and pinned low-profile gas block promote smooth cycling, while the included A2 birdcage flash hider offers familiar handling and easy compatibility with common muzzle devices. Aero Precision’s thoughtful engineering and clean aesthetics make this Pro Series upper a strong foundation for shooters who value consistent performance and refined craftsmanship.

• Manufacturer: Aero Precision
• Model: M4E1-T Pro Upper Receiver Group
• Caliber: 5.56x45mm NATO
• Barrel Length: 16 Inches
• Gas System: Mid-Length
• Handguard: MOD 4 15-Inch Free-Float M-LOK
• Barrel: Cold Hammer Forged, Chrome Lined