This is probably a silly question, but I just don't know what a flatline is! I hear it being talked about all the time! At first I thought it was something that goes on the air tank, then a friend said it was some un-do-able barrel mod that some how attaches something permanently to your gun? I am trying to get my gun to fire at the most precise consistancy, and is this something that would drastically help?
Thanks,
-Dave
Thanks,
-Dave

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