The SPEED Airsoft M4 HPA Tuneable Triggers are designed to work with HPA conversion systems with MOSFET/microswitch.
The SPEED M4 HPA Tuneable Triggers incorporates dual external adjustment set screws which will enable a trigger pull under 1mm with ease. The SPEED M4 HPA Tuneable Triggers also includes a specially designed coil compression spring that reduces the pull tension, so players with HPA engines can rip lightning fast strings easily even in semi-automatic mode.
 
Supports TM compatible V2 HPA converted gearboxes. Do not use on Kythera or any other mechanical engines.
 
For airsoft use only. Orders are billed in USD.
All sales final.