Question: What gun used in World War I, World War II, Korean War and Vietnam War is Sig Sauer GSR ("Granite Series Rail") modeled after?
Sentence (from "SIG Sauer 1911"): The SIG Sauer GSR ("Granite Series Rail") is a series of pistols with a stainless steel frame and slide based on the M1911 by SIG Sauer.
Relevant evidence: Yes