A machined aluminum upper receiver that replaces the original AAP01 plastic upper. It includes the TDC hop up, which allows one to adjust your hop up with an allen wrench without having to split open your pistol. The hop up design itself offers a more even performance than the default AAP01 model.

Specifications

• Manufactured by TTI Airsoft
• Machined aluminum construction
• Compatible with the AAP01 series
• Includes TDC hop up unit