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 "USS Valley Forge (CV-45)"): She was reclassified in the early 1950s as an attack carrier (CVA), then to an antisubmarine carrier (CVS), and finally to an amphibious assault ship (LPH), carrying helicopters and marines.
Relevant evidence: No