Performance Center 1911 with factory night sights — Tritium front and rear from XS Sights — in addition to the standard Pro Series trigger job and checkered front strap. Night sights address the 1911's traditional weakness of poor low-light performance with standard sights. Type: Pistol Action: Semi-Automatic Caliber: 45 ACP Capacity: 8 Year introduced: 2011, USA Weight: 41 oz Overall length: 8.7" Status: Active Intended use: Home Defense, Duty / Service