This replacement or spare magazine is compatible with your Beretta Px4 Storm. It is also compatible with these other Beretta models: Cx4 Storm with Px4 magazine well insert/magazine release, Px4 Compact, and 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	17 rd
Finish	Black
Model
Material	Steel
Type	Detachable
Model Fit	Px4 Series
Brand Fit	Beretta
Max Capacity	17