AHR, he does primarily the CZ format rifles, NO ONE really knows that model better, now that said, there is a group outta MO that does work for CZ and takes the large bores and does "custom shop work". I'd have to dig for the name if your interested in that route. But if you send to AHR i'd look at a few other improvements, like trigger and maybe some action smoothing and reliability work, its a bargain for what your getting.