"Some of the best stories have the saddest endings."

The CSMG-MKII, or the "Concentrated Soulfire Machine Gun Mark Two" is an extremely volatile and experimental weapon with no known consumer production models available.
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The gun draws from its massive vacuum-sealed Soulfire battery mounted to the bottom of the weapon and heals the user upon successful hits. Reloading the weapon by unseating the battery draws life-force directly from the wielder.