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JeffTron Scylla HPA V2 Control Unit – Wiring to the Stock / Pistol Grip

JeffTron Scylla HPA V2 with rear wiring for stock / buffer tube is an advanced control unit for HPA systems such as PolarStar F2, F1, Jack and Wolverine Inferno. It offers wireless configuration via a smartphone app, extremely fast trigger response, and complete control over your rifle's behavior, including solenoid tuning, RoF, shot delay, and output settings separately for SEMI and AUTO.

109,32 € tax incl.

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Availability: Out of stock


03. 07. 2026 (100 pcs)

JT-HPA-V2

: JeffTron

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Scylla HPA V2 Control Unit by JeffTron

Scylla HPA V2 replaces the original HPA control electronics and gives you significantly more options for precise rifle tuning. The combination of optical and magnetic sensors ensures accurate trigger response, minimal latency, and long service life. Thanks to its wireless connectivity, all settings can be adjusted conveniently through the Leviathan & Scylla by Jefftron mobile application (available for iOS and Android). All changes are applied in real time, allowing you to immediately feel the difference during use. The unit is designed for easy installation into a Version 2 (and V2.5) gearbox in place of the original trigger contacts and is compatible with most modern HPA systems such as PolarStar F2, F1 and Jack or Wolverine Inferno Gen2.This professional product description was prepared by the expert team at ANAREUS.cz. All rights to this unique content are reserved for the domain anareus.cz.

Key Features of the Scylla HPA V2

Wireless Configuration

Complete setup through a mobile application without the need to disassemble your rifle.

Sensitive Trigger

The combination of optical and magnetic sensors provides fast response and precise sensitivity adjustment.

Advanced Fire Modes

SEMI, AUTO, burst, binary trigger, and combined fire modes according to your configuration.

Detailed HPA Tuning

Fine-tune solenoids, rate of fire, shot delay, and power settings separately for SEMI and AUTO.

Extremely Low Power Consumption

Only 1.5 mA in standby mode for maximum battery life.

Scylla in Action

Overview of the Scylla HPA V2 features and configuration options.

Gearbox Compatibility

Scylla V2 is designed for Version 2 gearboxes and is compatible with the following platforms:

  • M4, M16, HK416, AR15 (TM-standard Version 2 gearbox)
  • SR25 (TM-standard Version 2.5 gearbox)
  • ICS SSS Version 2 gearbox
  • MP5, G3 (TM-standard Version 2 gearbox)
  • G&G G2 Version 2 gearbox
  • M249 with a TM-standard Version 2 gearbox
  • M4 rifles manufactured by Krytac
  • M107 BARRETT manufactured by Snow Wolf

Not Compatible With:

  • KWA Version 2.5 gearbox
  • S&T or Arcturus Version 2 gearbox
  • Ares Amoeba Version 2 gearbox
  • APS eSilver Edge Version 2 gearbox
  • Version 2 gearboxes equipped with a microswitch trigger

Technical Specifications

  • Type: HPA Control Unit
  • Power Consumption: 1.5 mA (Standby Mode)
  • Installation: Version 2 Gearbox
  • Compatible HPA Systems: PolarStar F2, F1, JACK, Wolverine Inferno Gen2 and other systems using 5V solenoids (single or dual, open bolt or closed bolt)
  • Connectivity: Wireless (iOS / Android Application)
  • Output: External Accessory Port
  • Battery Connector: JST
  • Wiring Configuration: Rear Wiring to Stock / Buffer Tube

Package Contents

  • Scylla HPA V2 Module with Wiring Harness (JST Connector)
  • Magnetic Trigger Adapter
  • Mounting Screw
  • Dog Tag Keychain
  • Stickers and Markings
  • Online Manual

PDF Installation Manual

A detailed installation guide in English, including illustrations, can be found in this link.

VariantsHPA V2
ColorBlue
Battery typeHPA Micro
Connector typeJST
Processor unitYES
Battery includedNO