Aero Precision M4E1 Complete Upper for AR-15 223 Remington 5.56 NATO – 16 Inch Barrel 1:7 Twist (APAR700315M7)

• Complete upper receiver assembly designed for AR15 platform rifles
• Chambered in 223 Remington and 556 NATO for versatile use
• Includes 16 inch barrel with 1 in 7 twist rate
• Equipped with ATLAS S ONE M LOK handguard for accessory mounting
• Mid length gas system supports smooth operation
• Flat dark earth finish enhances durability and corrosion resistance

The Aero Precision M4E1 AR15 Complete Upper is an AR-15 upper receiver assembly designed for building or upgrading AR-15 rifles. The Aero Precision M4E1 AR15 Complete Upper features a 16 inch barrel chambered in 223 Remington and 556 NATO with a 1:7 twist rate and a mid length gas system for standard rifle configurations.

This AR-15 upper receiver assembly is manufactured by Aero Precision with a Cerakote flat dark earth finish and includes an ATLAS S-ONE handguard, low profile gas block, and mid length gas tube. The Aero Precision M4E1 AR15 Complete Upper is configured for AR-15 platforms and does not include a bolt carrier group or charging handle. In typical setups, this upper receiver assembly interfaces with compatible lower receivers and supports standard component installation. This product is used for rifle assembly or component replacement in AR-15 systems for range use or general firearm configuration tasks.