The G&P high flow valve fr the TM M4A1 MWS GBBR and Hi-Capa is designed to be a replacement for the stock valve found the said platforms. With the high flow, you can essentially increase the FPS of your airsoft gun.

Compatibility:

• Tokyo Marui M4A1 MWS GBBR
• Tokyo Marui Hi-Capa GBB Pistol