This replacement or spare magazine is compatible with your s&w m&p shield m20.
Caliber: 9mm Luger
Capacity: 8rd
Finish: Black
Model: M&P Shield
Material: Steel
Type: Detachable
Model Fit: M&P Shield M2.0
Brand Fit: S&W
Capacity: 8
Caliber: 9mm Luger
Capacity: 8rd
Finish: Black
Model: M&P Shield
Material: Steel
Type: Detachable
Model Fit: M&P Shield M2.0
Brand Fit: S&W
Capacity: 8