Ruben, nothing but the magazine capacity Sir. Most manufacturers including CZ make firearm packages that have 10rd magazines so their pistols can also be sold in state that have magazine capacity restrictions. The pistols are exactly the same but just have 10rd mags included. The pistols will also accept any standard capacity magazines just fine.

From what I know, just the capacity of the magazines due to certain restrictive states such as California, Massachusetts, etc. it was my pleasure to assist you.

just the mag the 10 round gun has a modified mag that is restricted to hold 10 round