Trigger Spring for WE / TM / KJW / HFC M9 series Airsoft Gas blowback

HFC Part #68
KJW Parts #37
WE Part #68

For all Marui / HFC / G2 / BELL / WE / CQB Master / Socom Gear / KJW / Taurus and compatible System M9 Airsoft Gas Blowback Series