Delivery before X-MAS only for orders received by December 17, 2025.
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You're getting pretty serious about airsoft, aren't you? We know the drill. The best way to dive deeper into our world is to upgrade your weapon. Because suddenly you'll find that your baby shoots farther, is more accurate, sounds better and breaks down less. And that's just the tip of the iceberg! Internal parts for electric airsoft guns come i...
You're getting pretty serious about airsoft, aren't you? We know the drill. The best way to dive deeper into our world is to upgrade your weapon. Because suddenly you'll find that your baby shoots farther, is more accurate, sounds better and breaks down less. And that's just the tip of the iceberg! Internal parts for electric airsoft guns come in many categories, but if you're just starting out, you should definitely look for a new mechabox, spring, seals and HopUp chamber first.



: JeffTron
JT-LEV-V2F-SB
Leviathan V2 Optical ETU unit by JeffTron with front wiring. Includes a CNC aluminum SPEED trigger by Retro Arms (black). For gearbox V2 and V2.5 (M4, M16, MK18, HK416, SR-25, and other platforms). Bluetooth programming via JeffTron app (iOS / Android). Hair trigger mode with just 0.13 mm of travel. RFTS system – realistic trigger resistance simulation.
: Perun
PERUN008
ETU++ is a dedicated replacement for G&G ETU. Works with any G&G ETU replica and it’s compatible with 7.4V, 11.1V and 14.8V batteries. Thanks to many additional features it gives to the user the possibility to choose an optimal configuration to the requirements of the mission and gain an advantage over the opponent.
: Perun
PERUN010
Perun V2 Hybrid replaces mechanical contacts in your airsoft replica or gel blaster and provides lots of useful features. Optical and magnetic sensors allow to eliminate many moving parts that are prone to damage, thus increasing the reliability. Adaptive trigger control allows switching from a very short trigger travel to a long one even in the field,...
: Perun
PERUN011
Perun V2 Hybrid replaces mechanical contacts in your airsoft replica or gel blaster and provides lots of useful features. Optical and magnetic sensors allow to eliminate many moving parts that are prone to damage, thus increasing the reliability. Adaptive trigger control allows switching from a very short trigger travel to a long one even in the field,...
: JeffTron
JT-LEV-V2S-SB
Leviathan V2 Optical ETU unit by JeffTron with rear wiring. Includes a CNC aluminum SPEED trigger by Retro Arms (black). For gearbox V2 and V2.5 (M4, M16, MK18, HK416, SR-25, and other platforms). Bluetooth programming via JeffTron app (iOS / Android). Hair trigger mode with just 0.13 mm of travel. RFTS system – realistic trigger resistance simulation.
: JeffTron
JT-LEV-V2S-FB
Leviathan V2 Optical ETU unit by JeffTron with rear wiring. Includes a CNC aluminum FLAT trigger by Retro Arms (black). For gearbox V2 and V2.5 (M4, M16, MK18, HK416, SR-25, and other platforms). Bluetooth programming via JeffTron app (iOS / Android). Hair trigger mode with just 0.13 mm of travel. RFTS system – realistic trigger resistance simulation.
: JeffTron
JT-LEV-V2S-FR
Leviathan V2 Optical ETU unit by JeffTron with rear wiring. Includes a CNC aluminum FLAT trigger by Retro Arms (red). For gearbox V2 and V2.5 (M4, M16, MK18, HK416, SR-25, and other platforms). Bluetooth programming via JeffTron app (iOS / Android). Hair trigger mode with just 0.13 mm of travel. RFTS system – realistic trigger resistance simulation.
: JeffTron
JT-LEV-V2S-EB
Leviathan V2 Optical ETU unit by JeffTron with rear wiring. Includes a CNC aluminum EDGE trigger by Retro Arms (black). For gearbox V2 and V2.5 (M4, M16, MK18, HK416, SR-25, and other platforms). Bluetooth programming via JeffTron app (iOS / Android). Hair trigger mode with just 0.13 mm of travel. RFTS system – realistic trigger resistance simulation.
: JeffTron
JT-LEV-V2S-ER
Leviathan V2 Optical ETU unit by JeffTron with rear wiring. Includes a CNC aluminum EDGE trigger by Retro Arms (red). For gearbox V2 and V2.5 (M4, M16, MK18, HK416, SR-25, and other platforms). Bluetooth programming via JeffTron app (iOS / Android). Hair trigger mode with just 0.13 mm of travel. RFTS system – realistic trigger resistance simulation.
: JeffTron
JT-LEV-V2S-CB
Leviathan V2 Optical ETU unit by JeffTron with rear wiring. Includes a CNC aluminum CURVED trigger by Retro Arms (black). For gearbox V2 and V2.5 (M4, M16, MK18, HK416, SR-25, and other platforms). Bluetooth programming via JeffTron app (iOS / Android). Hair trigger mode with just 0.13 mm of travel. RFTS system – realistic trigger resistance simulation.
: JeffTron
JT-LEV-V2S-CR
Leviathan V2 Optical ETU unit by JeffTron with rear wiring. Includes a CNC aluminum CURVED trigger by Retro Arms (red). For gearbox V2 and V2.5 (M4, M16, MK18, HK416, SR-25, and other platforms). Bluetooth programming via JeffTron app (iOS / Android). Hair trigger mode with just 0.13 mm of travel. RFTS system – realistic trigger resistance simulation.
: JeffTron
JT-LEV-V2S-CLASB
Leviathan V2 Optical ETU unit by JeffTron with rear wiring. Includes a CNC aluminum CLASSIC trigger by Retro Arms (black). For gearbox V2 and V2.5 (M4, M16, MK18, HK416, SR-25, and other platforms). Bluetooth programming via JeffTron app (iOS / Android). Hair trigger mode with just 0.13 mm of travel. RFTS system – realistic trigger resistance...
: JeffTron
JT-LEV-V2F-SR
Leviathan V2 Optical ETU unit by JeffTron with front wiring. Includes a CNC aluminum SPEED trigger by Retro Arms (red). For gearbox V2 and V2.5 (M4, M16, MK18, HK416, SR-25, and other platforms). Bluetooth programming via JeffTron app (iOS / Android). Hair trigger mode with just 0.13 mm of travel. RFTS system – realistic trigger resistance simulation.
: JeffTron
JT-WIR-V3
Wiring for LEVIATHAN V3 Optical by JeffTron with top-wired configuration (AK). Original replacement wires for the ETU unit Leviathan V3 Optical. Equipped with T-Dean connector. High conductivity and durable PTFE insulation.
: JeffTron
JT-WIR-V2F
Wiring for LEVIATHAN / SCYLLA V2 by JeffTron, version with front wiring. Original replacement wires for the Leviathan V2 Optical and Scylla V2 ETU units. High conductivity and durable PTFE insulation.
: JeffTron
JT-WIR-V2ST
Wiring for LEVIATHAN / SCYLLA V2 by JeffTron, version with rear wiring. Original replacement wires for the Leviathan V2 Optical and Scylla V2 ETU units. High conductivity and durable PTFE insulation. Wire length 270 mm between battery connector and ETU in gearbox.
: JeffTron
JT-STO-EX
Wiring extension to stock by JeffTron with a length of 34 cm and T-Dean (male / female) connectors. Adapter for routing wiring to the stock in guns with front wiring or wiring above the gearbox. Ideal accessory for LEVIATHAN V3 Optical or MOSFET V3 units. Universal use also as a 34 cm extension cable.
: JeffTron
JT-TDS-BK
Tactical Dual Switch by JeffTron – compatible with Leviathan units with optical sensor (Optical). Used to activate functions such as 3-round burst, chamber lighting, drum mag winding and more. Dual configuration: ON/OFF toggle switch + pressure pad. Mounted on 22 mm RIS rail.
: JeffTron
JT-LEV-V3-EX
Leviathan V3 Optical ETU unit by JeffTron with front wiring (handguard / above gearbox). In a set with a wiring jumper / extender to the stock. Designed for gearbox V3 (AK series, G36, CZ805 Bren, and others). Bluetooth programming via JeffTron app (iOS / Android). Hair trigger mode. Ready for Brushless motors. RFTS system – resistance similar to a...