Thinking of doing the green gas mod to my Gen 2 mags. At the moment a stock Gen 2 takes about 10g to 13g of gas according to my measurements. That’s enough for about circa 65 rounds. Pretty poor in the big scheme of things. And remember the FPS will diminish with each pull of the trigger. So the more kid who’s has you have the better the FPS consistency should be. Well that’s the theory. Now my understanding, correct me if I’m wrong is that the options we have are either removing the the ‘grey metal’ fill tube completely (probably difficult in a Gen 2 as I hear it’s glued now) or chopping the fill tube as close to the brass nozzle valve or cutting it a certain length so that there is a gas reservoir left so the overfill valve can function correctly. Personally I’m thinking of leaving the fill tube so it’s the same length as the inner valve so I think that about 3-4cm. Thoughts appreciated gentlemen.