The Smith ' Wesson Model 4566TSW is a full size, tactical pistol. Utilizing .45 ACP ammunition, it has a capacity of eight rounds plus one. With an overall length of 7 7/8 inches, it has a 4 1/4-inch barrel and weighs 39.1 ounces when empty. Standard features of the 4566TSW include white dot front sight, Novak Lo Mount Carry 2-Dot rear sight, straight backstrap grip and stainless-steel contruction. All TSW Series Pistols have standard equipment rails and ambidextrous safety levers.