Manufactured from 1875 to 1889. They are also known as the Improved Army or Frontier Army revolvers and were Remington's first main attempt to compete with Colt and Smith & Wesson in the large caliber single action centerfire revolver market. The top of the barrel has the one-line legend, and a lanyard ring is mounted on the butt. The grip frame is marked with a numeral "3" behind the lanyard ring. The loading gate is numbered to the gun.