The M1911 is a single-action, semi-automatic, magazine-fed, recoil-operated pistol chambered for the .45 ACP cartridge, which served as a standard-issue sidearm. The gun included larger ejection port, a shortened trigger, a longer grip-safety spur and slightly shaved hammer spur to prevent hammer bite, serrated front sight, a curved mainspring housing, simplified checkered grips (although diamond grips still appeared on some), and relief cuts around the trigger guard on the frame.
Used by a few characters throughout the series, most noticeably by the Cousins. The Cousins' 1911s are nickel-plated. The gun is also shown in several promotional photos for season three.