Nothing contained in this subchapter shall bar recovery by a plaintiff in a cause of action in which the plaintiff proves that the proximate cause of the injury, damage, or death was:
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(1) A defective firearm, a defective nonpowder gun, or defective ammunition that caused the firearm, nonpowder gun, or ammunition to be at variance with its design; or
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(2) A defectively designed firearm, a defectively designed nonpowder gun, or defectively designed ammunition that did not function in the manner reasonably expected by the ordinary consumer of the firearm, nonpowder gun, or ammunition.