Ruger 5129 KNVRB455: The 6-round single action Bisley Vaquero revolver is available in 45 Colt or 357 Remington Magnum with gunfighter-style Simulated ivory grips. The stainless steel construction features a high gloss stainless finish, blade front sight, and notched rear sight. Patented reverse index pawl allows for easier loading and unloading while the traditional beveled Cylinder simplifies holstering. Transfer bar mechanism provides security against accidental discharge.