Replaces the front cylinder of the HPA engine to ensure perfect alignment and spacing between the hop-up and nozzle.
Compatible with standard V2 gearboxes, but it is suggested to use a modified/split gearbox to avoid forcing the assembly into position.
Features: - Combines HPA Engine and hop-up into a single assembly - Compatible Hopups: Maxx hopups with removable inlet - Compatible Engines: Polarstar Jack/F2
