You need to sign a waiver, also if you are renting then they hang onto your drivers license til you return the firearm. You can only use their ammo if you rent but if you bring your own gun then you can bring your own ammo. If you are under 18 you need a guardian but otherwise if you follow what i said before you'll be fine.
It would be best to call and see what their policy is. I've brought my son there though and they never asked his age.
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