I have never heard of a safety conversion for a CZ 452 and I cannot think of why I would want it.
I've got one; the trigger and safety are both rougher than the CZ. Don't know where you're getting the info on extraction problems As with the CZ, they can be improved with little/no $$$. Both got better simply by shooting a couple of hundred rounds. The savage pull/creep gets better by shimming the back of the trigger group. There is Brookie's kit for the CZ, or simply shim/change springs on your own.REA said:Mark II LH which might have extraction problems and not have the accuracy of a Green Mountain 10/22 barrel. The trigger can be replaced which is a major pro. It is a cheaply made rifle.