Korean gun bling

There’s a knock at the door. The hotel delivers room service for the two men: Korean hot pot and a dish of fried chicken.
Out of a backpack sitting on the floor at MA’s feet, he retrieves a revolver and sets it on top of the stack of papers. One of their new CZ75 clones, semiautomatic 99mm pistol, engraved and chromed with pearl handles.
“For you and your trouble,” says MA. He reaches into the backpack one more time, and places a bundle of cash next to the gun.
“What’s this?” It looks like old, US hundred dollar bills.
“Can you convert this to the new currency?”