The Aero Precision 5.56mm 16" BBL M4 Complete Upper Receiver w/ BRN BCG & Charge Handle brings together a classic M4-style configuration with modern reliability. Built around a 16" 5.56x45 NATO chrome moly vanadium barrel with carbine-length gas system and pinned front sight base, this upper offers familiar handling and dependable performance. The included BRN bolt carrier group with black nitride finish and standard AR-15 charging handle complete the package, giving you a ready-to-run upper for your AR-15 build.

This complete upper is well suited for general range use, training, and recreational shooting where a traditional M4 profile and handguard are preferred. The standard A2 flash hider and M4-style handguard provide a straightforward, no-nonsense setup that many shooters appreciate for its simplicity and durability. Aero Precision’s attention to detail and Brownells’ BRN components combine to deliver a reliable upper assembly that reflects both manufacturers’ focus on quality and consistent performance.

• Manufacturer: Aero Precision
• Model: 5.56mm 16" BBL M4 Complete Upper Receiver w/ BRN BCG & Charge Handle
• Caliber: 5.56x45 NATO
• Barrel Length: 16.00"
• Threaded Barrel: Yes
• What's In The Box: Complete upper receiver, BRN bolt carrier group, charging handle