The Walther PDP Full Size OR with 4-inch barrel is the optics-ready version of the standard 4-inch Full Size, adding suppressor-height sights for co-witness with a mounted optic. The OR plate system accepts multiple footprints directly. All PDP features carry over. The 4-inch OR is the most popular law enforcement PDP configuration, combining carry-friendly barrel length with factory optic readiness. Type: Pistol Action: Striker-Fired Caliber: 9mm Capacity: 15 Year introduced: 2022, Germany Weight: 25.4 oz Overall length: 7.4" Status: Active Intended use: duty, carry