Optic-ready variant of the Springfield Echelon with the Central Operating Group (COG) optic system — accepts Sig Romeo, Trijicon RMR, Holosun, and Shield footprints natively without adapter plates. Type: Pistol Action: Semi-Automatic Caliber: 9mm Luger Capacity: 17 Year introduced: 2023, Croatia Weight: 25.2 oz Overall length: 7.9" Status: Active Intended use: Self-Defense, Duty