This replacement or spare magazine is compatible with your Beretta Px4 Storm. It is also compatible with these other Beretta models: CX4 with Px4 magazine well insert/magazine release, Px4 compact, Px4 sub-compact. *Note- If you are purchasing this magazine for a CX4 Carbine, please ENSURE that your pistol has a compatible adapter.
Specifications:

Caliber	40 Smith & Wesson (S&W)
Capacity	10 rd
Finish	Black
Model
Material	Steel
Type	Detachable
Model Fit	Px4 Series
Brand Fit	Beretta
Max Capacity	10