I have been a free pistol enthusiast and competitor for years.
I've owned about a half dozen TOZ35s, and have assisted many new shooters who have owned them. No more. They are my least favorite free pistol. They tend to break down. A lot! Fixing them is usually cheap, in that it mostly involves changing the very poor quality springs. But, more serious problems are not uncommon. The metallurgy is very inconsistent. With extended use, it's not unusual to find the lockup get out of whack to the point where the firing pin strike won't align with the cartridge rim. The usual fix is the weld up and reshape the camming surface of the operating lever. Firing pins break and are difficult to find replacements. You can get creative in having them repaired.
Later ones used plastic parts in the trigger mechanism. Didn't fill me with confidence.
The sight adjustments are crude. The sights are often crooked, especially the front.
The barrels are generally not accurate enough to hold the 10 ring of the FP target @ 50m.
By the way, they are not a Hämmerli copy. The trigger and striker design is totally unrelated.
On a personal note, I find the grip angle and weight to be uncomfortable.
Their one attribute is that they can take rough handling better than the more precision free pistols. But, that's like saying a Timex is better than a Swiss watch because of the abuse it can take.
OK, maybe one more attribute: you can cut them up in various ways and tinker with them without feeling bad. Bubba's dream free pistol!
One last caveat: the vast majority of used, import marked Toz35s are former club guns from the EU that have seen a lot of rounds through them. When they were $299 a pop they were a good source for parts.
Lastly, there is what I call the "Myth of the TOZ"....many erroneously attributed Olympic records, etc. People often confuse the TOZ with the far superior, and much rarer MU55 free pistol (aka MC55), as used by Moritz Minder.
Best Regards,
Jim