Sorry about the lack of info but I wasnt about to type out everything I did. Anyways I have gotten a consistant 330+/- 5fps buy takening apart my mag and putting a block under the rubber seal or nozzle rubber. I used a piece of an phone cord. Took one of the wire strands and for you that know the M9 mag its a square rubber nozzle so I just bent a piece to kinda mock a o-ring and then put the nozzle piece back into place. When compared to the other mags I have the rubber nozzle piece stands higher..... meaning I have a better seal. I Chronied it modded mag was 330 +/-5fps and the stock mag was at 310 ish.
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