Anyone have a measurement for a P320 mag release? I'm looking to get an extended one. Strike Industries sells one, but they can't tell me how much it extends the release. They did however give me the measurement length on theirs. 30.09mm, and with the extension (which screws on), it's 32.09mm. I don't want to have to take my mag release out just to measure it, if someone here knows the mesaurement.