CZ Duty 4.0 Full-Size 9mm Pistol, 4" Barrel, 19rd, Black, Optics Ready The CZ Duty 4.0 Full-Size combines a 4-inch barrel with a 19-round magazine capacity in a black 9mm pistol. Its full-size format is a central part of the configuration, giving buyers a clear grip-size designation alongside the barrel and capacity specifications. The optics-ready design provides for a compatible optic-based sight setup. The chosen optic must match the pistol's mounting arrangement; an optics-ready designation alone does not specify a footprint or establish that an optic is included. Key Features Optics Ready: Prepared for a compatible optic mounting arrangement. Full-Size Format: The stated grip-size configuration for this Duty 4.0. Magazine Capacity: 19 rounds in the specified 9mm configuration. Specifications Manufacturer: CZ Model: Duty 4.0 Format: Full-Size Caliber: 9mm Barrel Length: 4 inches Magazine Capacity: 19 rounds Color: Black Optics Ready: Yes Shop the CZ Duty 4.0 Full-Size 9mm Pistol, 4" Barrel, 19rd, Black, Optics Ready at BattleHawk Armory.