Springfield Armory(R) Echelon 4.5F is a California-compliant full-size semi-automatic pistol chambered in 9mm Luger. It features a 4.5 in barrel with black Melonite finish an optics-ready serrated steel slide and a black polymer grip module with Picatinny accessory rail. This configuration uses a 10-round detachable magazine and includes fully ambidextrous controls a loaded chamber indicator and magazine disconnect required for the California-compliant configuration.Key Features 4.5 in barrel with black Melonite finish chambered in 9mm Luger Semi-automatic operation with 10-round detachable magazine Variable Interface System optics-ready serrated slide U-Dot sights with tritium/luminescent front sight Black polymer grip module with Picatinny accessory rail California-compliant configuration with loaded chamber indicator and magazine disconnectSpringfield Armory(R) builds modern firearms that blend proven designs with contemporary features for today's shooters. The brand is known for duty-capable handguns and performance-oriented platforms that support optics lights and high-round-count training. Springfield Armory focuses on practical reliability shooter-friendly ergonomics and consistent value across its lineup.