Not fiction, but the other night I was watching an older episode of "The First 48" and the weapon used in the homicide was a 2nd Gen. I thought it said "Model 649" on the frame in the close up, but since it was black and not stainless/alloy, it must have been a 669.

On a lot of the older episodes, the officers are carrying 3rd Gens.

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Can open, worms everywhere.