How do you do it? I've heard two very different stories. I've heard one where you just take out the old valve and pop this one in and your done in minutes. Another I heard you actually have to send your gun to AGD and they do it for 200$ (or 300$ to keep your old valve...???). I think one or the other has to be true, so which one is it (or, gasp, another way)
Thanks
Thanks


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