This magazine is compatible with your cz 527.It is a flush m1 only mag.
Caliber: 223 Rem
Capacity: 3rd
Finish: Black
Model: CZ 527
Material: Steel
Type: Detachable
Model Fit: CZ 527
Brand Fit: CZ
Capacity: 3
Caliber: 223 Rem
Capacity: 3rd
Finish: Black
Model: CZ 527
Material: Steel
Type: Detachable
Model Fit: CZ 527
Brand Fit: CZ
Capacity: 3