CZ P01 slide cutout?

[chris in va]

My new P01 has a cutout near the chamber face that my 75 didn't. It's directly opposite the extractor. Normal?

 

[mete]

Chamber face ? Do you mean breech face ? That may be there to give more room for the case rim as it swings out while ejecting . I've repaired guns that had that area poorly machined and the rim would drag on that and cause jams.

 

[chris in va]

Breech face, that's it. I've just never seen it on previous CZ models until now.