ETU Unit V2.2 G28 / HK417 (VFC)

PERUN processor unit for V2.2 gearbox (VFC G28 / HK417)
PERUN V2.2 for G28 / HK417 completely replaces the original contacts and introduces modern electronic control for the VFC G28 / HK417 platform. The unit uses Hall effect magnetic sensors for trigger detection and optical sensors for detecting the selector position and sector gear, significantly improving reliability and eliminating contact wear. The integrated adjustable Clicker trigger system allows you to fine-tune trigger resistance, pre-travel and over-travel exactly to your preference. Programming is done via the fire selector and trigger, so you can change settings anytime during gameplay without disassembling the rifle. The unit works with batteries from 7 V to 17 V and handles high-performance builds with strong springs or high rate of fire. You can set a short, sporty trigger pull for fast shooting or a longer, more realistic trigger feel for precise DMR setups.
Key features of PERUN ETU Unit V2.2 G28 / HK417

Integrated adjustable Clicker
Adjust trigger pull, pre-travel and over-travel without additional upgrades. Realistic break point according to your preference.

Magnetic and optical detection
Contactless sensing of trigger, fire selector and sector gear for maximum reliability.

Fully programmable modes
SEMI ONLY, BINARY, SEMI-AUTO, SEMI-BURST, BURST-AUTO, DMR mode and two-stage trigger.

Pre-cocking and active brake
Instant trigger response and motor overspin control even in high-performance builds.

Protection and diagnostics
Electronic resettable fuse, low voltage alarm for Li-Pol / Li-Ion batteries and diagnostic LED system.

Installation and programming video guide

Programming principle is identical to other Perun Hybrid V2 / V3 units.

Technical specifications

Compatibility: VFC G28, VFC HK417 (V2.2 gearbox)
Voltage: 7 V – 17 V
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