Ruger GP100
…Special), six- (.357 Magnum, .38 Special, & 10mm Auto), seven- (.357 Magnum and .327 Federal Magnum), or ten-shot (.22 long rifle) revolvers made by Sturm, Ruger & Co., manufactured in the United States. The GP100 was an evolution of an earlier Ruger double-action revolver, the Security Six…