The Tisas Tanker is a .45 ACP 1911 with a Commander length (4.25”) barrel. This barrel length and caliber combination has been a favorite in the United States for decades as it is compact enough to conceal, large enough to control, and powerful. Hammer forged hard chrome plated barrel, hammer forged frame, hammer forged Commander length slide, flared and lowered ejection port, commercial style thumb safety, beveled magazine well, flat main spring housing, series 70 internals.