New low pressure flute valve. Requires minimal pressure to close and cycle GBB Pistol.
Allows a GBB pistol to function at temperatures of 32 degrees fahrenheit with pure propane and 25 degrees fahrenheit with MAP gas. Compatible with WE rifles and TM/WE/KJW pistols. Once installed properly, it will run the magazine dry without venting.
Tested here with TM Pistol with sub-60 degree magazine: https://www.youtube.com/watch?v=zcmSynZWIec
Tested here with Stark Arms GBB: