Continuity mistake: Right before Sean kills The Man he pulls out a silver gun and puts it in his pocket. Later on in the movie he has a black gun.
TTWieland
16th Oct 2011
21 grams (2003)
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Suggested correction: The gun only appears silver in certain shots. This is because of the lighting and angle of the gun and the fact that it is - as are all guns - covered in oil to protect it.