DetailsBrand: Springfield ArmoryModel/Series: Echelon 4.5F *CA CompliantCaliber: 9mm LugerCapacity: 10Frame Finish: BlackOAL: 8"Frame Material: PolymerSlide Finish: Black MeloniteSights: Tritium, Luminescent Front / Tactical Rack U-Dot RearSlide Description: Optic Ready / Serrated / Loaded Chamber IndicatorBarrel Finish: Black MeloniteBarrel Material: Hammer Forged SteelTwist: 1:10"Grips: TexturedHeight: 5.50"Width: 1.20"Barrel Length: 4.50"Max Capacity: 10Weight: 24 ozFrame Description: Polymer Frame w / Picatinny RailFeaturesSetting a new standard for modern striker-fired duty pistols, the CA Compliant Echelon 4.5F features a modular design built around a robust stainless-steel chassis and a suite of patent-pending features. Engineered for superior ergonomics and durability in the harshest conditions, the Echelon 4.5F employs a revolutionary optics-mounting system for unmatched adaptability across a broad range of red-dot sights. This configuration includes the California-required loaded chamber indicator, magazine disconnect, and 10-round magazine capacity.