Bones: Dr. Brennan's Prop S&W 500
This hero prop comes in a case and looks real but is rubber.
This prop S&W 500 was used in Season 2 and 3.
Then, While in her Wonder Woman Halloween costume, Brennan uses her S&W 500 in "Mummy in the Maze" (S3E05).
And Booth holds the revolver in "Mummy in the Maze" (S3E05).