A must is the dropped/off-set Blade Tech from Angus.
next, you need new sights; the stock sights plain suck & fact is, every time I fire any gun, I spend my time staring at only one part of it - the sights. Get the Angus competition sights.
Good mags are a must! You don't need the factory 18s since you are only allowed to load 10 (unless you compete outside the USA) - but insist on the Mec Gars for CZ that DO NOT HAVE the indents near the baseplate.
The rubber coated baseplates are required - which you will understand after the 1st time you take a chunk out of your palm doing a reload with the metal baseplate!
The factory mainspring or hammerspring is way too heavy - use a Wolf 15 instead. And recoil spring? No more than 11 or 12 pounds. Add some skate tape & 147s @ 128 to 130 PF & you are ready to shoot!
Regards,
D.C. Johnson