Airtech Studios STC Speed Trigger Converter for G&G PRK9 / RK74 Series Net-Weight-(g)_551 and in this case

and in this case

Suitable for Cybergun Smith&Wesson M&P MP9 Seris Airsoft Gas Blow Back GBB Pistol

Aluminum Construction

just like the real steel does

G&P I5 Gearbox Trigger Board

Airtech Studios STC Speed Trigger Converter for G&G PRK9 / RK74 Series Net-Weight-(g)_551 and in this caseOnce the Speed Trigger Converter (STC) is installed, this will drastically reduce the trigger pull on the G&G PRK9 & RK74 gun series to achieve a hairline trigger response. Designed to work with the G&G ETU series to drastically reduce the trigger pulling distance from 7mm to 1. 8mm, Great for competitive speed shooting to gain faster reactions against your opponents! Airtech Studios STC Speed Trigger Converter for G&G PRK9 RK74 Series Simple