The P320 RXP (Romeo X Pistol) ships from the factory with a SIG Romeo1Pro red dot optic pre-installed on an optics-ready slide. The RXP eliminated the need to purchase and mount a separate optic, offering a factory-zeroed carry or duty pistol with a miniature red dot out of the box. Available in Full Size and Compact configurations. Type: Pistol Action: Striker-Fired Caliber: 9mm Luger Capacity: 17 Year introduced: 2019, USA Weight: 30.2 oz Overall length: 8" Status: Active Intended use: duty, carry, law_enforcement