Continuity mistake: In the scene near the end of the film when Murtaugh shoots at Wah Sing Ku and mistakenly kills the last of the four fathers, you can clearly hear an empty shell casing hit the floor, although he is using a revolver, which do not spit out the empty shells as they are fired.
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Lethal Weapon 4 (1998)
Ending / spoiler
Directed by: Richard Donner
Starring: Mel Gibson, Danny Glover, Chris Rock, Jet Li, Rene Russo, Joe Pesci, Kim Chan, Steve Kahan
Jet Li is the real mastermind. Riggs and Murtaugh kill him during a shootout by the docks. Riggs becomes a father. Murtaugh becomes a grandfather. Butters becomes Murtaugh's son-in-law.
Rick Regan
Leo Getz: They fuck you with cell phones. That's what it is. They're fuckin' you with the cell phone. They love it when you get cut off. Y'know why, huh? You know why? 'Cause when you call back, which they know you're gonna do, they charge you for that fuckin' first minute again at that high rate.
Question: I wonder, what was the point of having a gunfight with the armored man at the beginning of the film?
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Answer: It was put in the film to introduce the concept of Rianne and Lorna being pregnant and to bring in the joke about the news article about Roger, not to mention giving the film an action-heavy opening.