The Perun VFC G28/HK417 Mosfet is a premium electronic trigger control system designed specifically for VFC platform sniper rifles and designated marksman rifles. This drop-in mosfet upgrade replaces your stock trigger block housing with Perun’s integrated electronic board, delivering tournament-grade trigger response and reliability.
Key Features
- Magnetic trigger detection – eliminates contact bounce and ensures consistent trigger registration
- Optical selector switch – precise, wear-resistant mode selection with audible feedback
- Sector gear detection – monitors gearbox rotation for safe motor cutoff and improved longevity
- Integrated adjustable clicker – fine-tune trigger pull weight and feel to your exact preference
- Drop-in design – compatible with VFC G28 and HK417 platforms without permanent modification
- Enhanced trigger response – noticeably faster trigger-to-fire cycle compared to standard mechanical triggers
Real-World Use Cases
This mosfet excels in milsim and competitive skirmish environments where trigger responsiveness and reliability matter. DMR and sniper players benefit from the adjustable clicker for precision trigger control. The optical selector and sector detection make it ideal for players running heavier spring setups or upgraded internal builds that stress standard gearboxes.
Technical Specifications
- Platform compatibility: VFC G28, HK417
- Trigger detection: Magnetic with contact elimination
- Selector type: Optical with audible feedback
- Integrated features: Adjustable clicker, sector gear detection
- Installation: Drop-in trigger block replacement
Compatibility & Upgrades
The Perun VFC G28/HK417 Mosfet integrates seamlessly with VFC platform internals and works with standard AEG batteries. It pairs excellently with aftermarket spring upgrades, high-torque motors, and reinforced gearboxes. The mosfet’s sector detection feature actively protects your gearbox during extended firing cycles.
UK Legal & Site Notes
This mosfet does not alter the external or functional performance classification of your rifle. As a purely electronic control upgrade, it remains fully legal for UK airsoft skirmish and milsim events. Always confirm with your site before using advanced electronics on heavily upgraded builds, and ensure your power source matches the mosfet’s requirements.
Upgrade your trigger response and gearbox reliability with the Perun VFC G28/HK417 Mosfet. Order now from Airsoftdirect for next-day UK delivery.










