Air Nozzles

Air Nozzles feed BB's to the hop up unit, and airtight sealing the cylinder to the barrel.
Upgrade Air (seal) Nozzles often have internal o-rings for a better seal and minimum leakage.
Another type is Bore Up, with a larget innerdiameter. This enables a larger airflow. Please Note! For this, you would need a Bore Up Cylinderhead, Bore up Pistonhead and a Bore Up Cylinder!