I should clarify that this is not a swap meet. It's a shooting match. There will SOMETIMES be a gun or two available, but don't show up expecting that. This is just where you find the guys that have what you are looking for, or know who does, because we actually shoot them and collect them.
But yes, non members are welcome to come to the match. The ViMBAR and ViMSAR threads detail the procedures. Thank you for the question.