This replacement or spare magazine is compatible with your Beretta M9A3. It is also compatible with 92SB, 92F, 92FS, 92A1, M9, M9A1, 90-Two, Billennium, Vertec, Brigadier, Centurion, Elite, and CX4 9mm Carbine with 92 Series magazine adaptors.
Specifications:

Caliber	9mm Luger
Capacity	10 rd
Finish	Tan
Model	M9A3
Material	Steel
Type	Detachable
Model Fit	M9-A3
Brand Fit	Beretta
Max Capacity	10