The SIG SAUER(R) P211 GT4 is a single-action-only 9mm pistol with a 4.2-inch target-crowned bull barrel. This configuration includes a ROMEO-X SIG-LOC PRO optic a steel frame and an alloy grip module with G10 grip panels.Key Features:Optic: Included ROMEO-X SIG-LOC PRO red dot.Capacity: 21+1 rounds with the extended magazine.Magazines: Two 21-round and one 17-round P320 steel magazines.Sights: X-RAY3 day/night front sight and fixed black rear sight.Trigger: Straight-pull skeletonized flat-blade trigger.Controls: Ambidextrous controls removable steel magwell and Picatinny accessory rail.SIG 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.