Question: The Smith and Wesson Model 22 series is a refined commercial version of a U.S. six-shot revolver of .45 ACP caliber adopted by the U.S. Army in 1917 durring what war?
Sentence (from "M1917 revolver"): The M1917 Revolver (formally United States Revolver, Caliber .45, M1917) was a U.S. six-shot revolver of .45 ACP caliber.
Relevant evidence: Yes