PT845 history special: Similar to the PT24/7 OSS, 4in.barrel,DA/SA with two strike capability. Novak sights,12 shot magazine. Comes in blue of stainless steel. Front and rear serrations. Lower frame Picatinny rail. 3 position safety and decocker. Ambi magazine release. Extended grip, small,medium, large interchangeable backstraps, external hammer, double stack mags, takedown lever. 30 ounces. Made from 2008-2016.