Forerunner HPA Engine

Forerunner spesifikasi

- Close nozzle fix air chamber 

- Programmable independent selector (semi, binary, 3 round burst, full auto)

- Mag sensor

- BB sensor (optional)

- 120psi Max pressure

- Programmable 18-30 Rps

- Drop in V2 M4/AR16 (NON ambidex selector)

- Bekerja dengan 3S lipo/12v