The Heckler & Koch P30S is a semi-automatic pistol that combines HK's renowned engineering with modern ergonomic features. The pistol comes chambered in 9x19mm Parabellum with a 15-round standard magazine capacity (10-round version available for restricted markets). It features a cold hammer-forged barrel with polygonal rifling, measuring 3.85 inches in length. The overall dimensions are 7.12 inches in length, 5.43 inches in height, and 1.37 inches in width, with an unloaded weight of 26.08 ounces. The pistol utilizes a modified Browning-type recoil system with a proprietary HK captive flat recoil spring. Notable features include the ambidextrous controls, with dual slide releases and magazine releases that can be operated from either side. The "S" designation indicates the presence of an external manual safety lever. The P30S offers exceptional modularity through its unique grip customization system, featuring interchangeable backstraps and lateral grip panels that provide 27 different grip configurations. Additional features include a MIL-STD-1913 Picatinny rail for accessories, three-dot luminous sights, and HK's hostile environment finish for enhanced durability. The pistol is available in several trigger configurations, including DA/SA (V3) and LEM (Law Enforcement Modification) variants, allowing users to choose their preferred trigger system.