Honestly, I think Keltec is the closest to creating weapons at RWBY-levels.

“And here we have a pistol with a 50 round mag, a scope, a bayonet, and it can transform into a pole axe”

You have single handedly forced me into a position where I need to get that magazine to read this

7396435
Same here.

7396302
Cast it into the fire!
Destroy it!