Port's Blunderbuss is a weapon used by one of the professors at Beacon Academy. It's an amalgamation of a a firearm weapon known as the blunderbuss and the hand to hand melee tool, the axe. It's seemingly impractical design has lead to the weapon receiving some ridicule. However it has proven to hold a tremendous amount of power and effectiveness if used properly.
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Name: Port's Blunderbuss
Classification: Combination of a shotgun and axe
Wielders: Peter Port
Speed: At least Supersonic (Killed weaker Grimm Monsters before they could react)
Range: Several meters with fireballs and shots
Weaknesses: The location the blades make it rather easy to cut yourself while trying to aim for a shot. It was later revealed that the blades were originally intended to fold within the gun. However this would still lead to some impracticalities. As one would have to retract it each time they wanted to make a shot and bring it back out each time they wanted to strike with the axe part.