The following weapons were used in the film Re-Animator:
Smith & Wesson Model M&P Revolver
One of the Swiss police officers summoned to the Zürich University at the beginning of the film uses what look like Smith & Wesson M&P although the angle makes it difficult to tell.
Smith & Wesson Model 586
Mace (Gerry Black), a campus guard at Miskatonic University, carries what seems to be a Smith & Wesson Model 586 judging by the look of the barrel and the largeness of the handle. He mostly keeps it in a hip holster but has it out briefly in one scene.