A magical type musket that uses mana capsules as ammunition. These capsules can be easily bought and / or made, while the white jade engravings on the side act as an enchantment which makes the gun lighter.
When I was a kid, I really wanted to be Marvin the Martin. No, not because of his stylish scrub-brush headgear or his oversize clown shoes. Nope, it was the awesome destructive power of his ACME Ray Gun that I envied.