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FX Dreamline stock plenum size

I know the power plenums are 17 cc's. What I want to know is the size of the plenum that is part of the gun.
There is a way to do it. Take the cylinder (assuming you have the standard version) off the rifle. Stand in on it's gauge side straight up and fill the empty plenum area to just under the threads with 100% silicone oil. Pour out that silicone into a precise measuring cup and look up OZ to cc. You can also use a medical measuring cup that's either in cc's or mL as mL is the same thing as cc. The silicone won't hurt the cavity and just wipe out the rest with a microfiber cloth. And there you are. Make sure to post your results so us lazy people know the volume as well! Remember to subtract that area of the block that enters the plenum.
 
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