Upgrade the performance of your AR15 build with this Aero Precision AR-15 M4E1 Upper Receiver Assembly. The Enhanced Handguards provide a lightweight free float design for your custom AR15 build. The EM system features M-Lok slots for advanced modularity and customization. Machined to mil- spec dimensions and engineered to perfection, these handguards eliminate bulk while retaining strength and stability. All other components are standard to the AR15 platform. This upper assembly does not include a BCG or Charging Handle. Features

Note: This barreled upper receiver assembly has a barrel length under 16” and is therefore subject to all NFA rules and regulations. Know your local laws before purchasing.