Thread: Changing the chrono speed???

Hey guys, quick question how do i change the chrono speed on the 09 proto slg basic?? Right now its shooting at 250, max at the field is 275.Is it much of a difference?? Thanks..

there is a gold allen key hole in the bottom of the regulator (front grip)... turning clockwise will lower the fps and turning counter-clockwise, will bring it up...