Perun V3 HPA Trigger Board
The Perun V3 HPA Trigger Board is a drop-in electronic trigger interface for HPA engine conversions in V3 gearbox bodies — the full fire-mode version that provides both semi-automatic and full-automatic firing modes. It replaces the standard trigger contacts in a V3 gearbox (AK-pattern, MP5, G3, and other V3 platforms) and interfaces with the HPA engine solenoid to provide clean trigger signal management for the HPA system.
The Perun V3 board provides the trigger interface that makes HPA engines function correctly in a V3 body — without a dedicated HPA trigger board, trigger feel and response in an HPA conversion can be inconsistent. For AK-pattern and V3-platform HPA builds running Wolverine, PolarStar, or other HPA engine systems, the Perun V3 board is the correct trigger interface component.
- Perun V3 HPA Trigger Board — semi and auto modes
- Drop-in trigger interface for HPA conversions in V3 gearbox bodies
- Correct trigger signal interface for HPA engine solenoids
- Compatible with AK-pattern and other V3 platform HPA builds
- Made by Perun — specialist AEG electronics manufacturer



