Though Defender Outdoors does have a Nerf Gun shooting experience for children's birthday parties, it isn't something that is always available. Unless the gift certificate is from/for Defender Outdoors, I don't think you'll be able to use it. But, there is probably a different place in DFW that you can use that gift certificate. You might want to look on the gift certificate for a business name or website for where you can use it.
Not that I know of. They sell weapons not nerf guns or toys.
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