Revealing mistake: When Travolta is fighting the Asian gangsters in the alley, he disarms one of the thugs by taking apart his opponent's gun. You can see that the Beretta pistol is partly disassembled before Travolta even touches it.
Trivia: John Travolta is handed a bag of burgers. He takes one out and hands it to his partner, and calls it a Royale With Cheese. A nod to Pulp Fiction, where Travolta explains to Samuel L. Jackson that in France, they call a Quarter Pounder with cheese a "Royale with Cheese".