Can't say for sure this time, but last time I went to one of these your $20 entry fee got you 10 tickets, and a ticket or two would let you get your hands on an MG or suppressed rifle for a couple rounds. You could purchase additional tickets.
That was for the silencer shoots. For the machinegun shoot, it is a $20 range entry fee. This allows you to shoot your own guns as much as you like. The machine gun rentals are extra. Pricing varies by the firearm but it's very reasonable. We are still finalizing the list of guns we are bringing.