SIG SAUER(R) 1911X is a semi-automatic pistol chambered in .45 ACP. This configuration features a 4.2 in barrel an optics-ready slide and an 8-round detachable magazine. The pistol is built around the traditional 1911 operating system with modern SIG Sauer enhancements for defensive and recreational shooting applications.Key Features 4.2 in barrel chambered in .45 ACP Single-action semi-automatic operation with 8-round detachable magazine Optics-ready slide for compatible reflex sights Modernized 1911X configuration Traditional 1911-style controls and handling characteristicsSIG SAUER(R) produces firearms with a strong emphasis on modern engineering modularity and duty grade performance across its catalog. The brand is widely known for handguns rifles optics and related products developed for military law enforcement defensive and sporting applications. SIG Sauer(R) products are recognized for durable construction practical innovation and broad platform support across a wide range of configurations.