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Heat treated for enhanced durability and strength
Adjustable strap
Durable metal construction
Ported cylinder head
Perun ETU++ Airsoft MOSFET for G&G ETU Gearboxes MAD BULL Heat treated for enhanced durabilityETU++ is a dedicated replacement for G&G ETU electronic board. It enhances your trigger unit by adding many new, useful features. Simply disconnect the stock electronic board and plug in ETU++. The stock trigger unit (switch set) is retained, so there is no need to open the gearbox. Works with any G&G ETU replica, as well as 7. 4V, 11. 1V and 14. 8V batteries. Independently programmed firing modes: Program the firing modes any way you like, setting
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