Some things are subjective,CZ magazines in their design,capacity,lock up,wells and actuation,along with round count...are a joke. Their triggers are dog schit,even after being Yo'd or PMTJ'd.
Knock the sights of a RAR(as obviously pictured),de-horn/re-spring the trigger in 30 seconds and you are there,with 9rds of flush fit ammo and reap extry jingle in the pocket to boot.
Hint.................