This is the CZ 5 round factory magazine for the CZ 527 in .223 Remington.
Manufactured from blued steel, the single stack magazine features a stainless steel follower and heat treated spring.
Will fit all post 1993 CZ, BRNO and Fox rifles.
This can be adapted to fit pre 1993 CZ 527 and BRNO Fox rifles by flattening the steel lugs at the front and back of the magazine. The lugs are pressed out from the frame and can be carefully hammered back in place or ground off.