The Ruger GP100 is a mainstay in the revolver market, having replaced the popular Security-Six in the 1980s. It’s known for its ruggedness and solid build, ...

A tough and reliable .357 Mag. Ruger GP100 outfitted with a 6" barrel will do most of what the cartridge is capable of, while a 4" barrel is a well-established, do-all barrel length.