Like what?
Some of the advantages of the AR-24 over the CZ 75B are:
1. 1911 firing pin block, which is a lot less likely to break due to dry firing.
2. A firing pin safety which releases spring tension when the trigger is pulled instead of increasing tension as does the CZ.
3. To me, a more ergonomic grip. The backstrap indents to give a very comfortable hold.
4. A rounded trigger guard rather than the squared one on the CZ. This is merely a personal preference.
5. A more massive extractor. I like the overkill; never had a problem with the one on a CZ, but I like the more massive on the AR better.
6. A forged slide and frame. A cast may be adequet, yet I feel the forge offers a little more strength. Apparently CZ does too. Their slide is forged.
7. The loooooooong trigger pull of the CZ does not exits with the AR-24. This is a big one for me.
I do like the CZ 75 B, but I feel the AR-24 has a lot more to offer.