Penney is clearly not out of ammo, as it showcased a dazzling display of technology.

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And when he ran out of ammo, he reached for the only thing left -- a shovel.

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And, as long as you have power, they won't run out of ammo.

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So if you run out of ammo, you may have to drop your fully upgraded repeater in favor of a standard carbine.

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You fashion powerup syringes out of local flora and bigger ammo pouches out of the skins of mighty predators.

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According to the group, the barrel can be changed out to fire different kinds of ammo.

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