This replacement or spare magazine has a black finish and is compatible with Beretta's Px4 Storm series. Features: Replacement or spare magazine for your 9 mm Px4 storm Also compatible with - CX4 with PX4 magazine well insert/magazine release, PX4 full size 9MM, PX4 compact 9MM, PX4 sub-compact 9MM (will extend below the base of the grip on a compact and sub-compact)