From bouncing around on several sites I've noticed a couple of common complaints on the Cz452/3 rifles. 1. the cleaning rod scrape- two sources ejector either use a guide or modify your ejector block like a BRNO (see photo) and the sear use a clothes pin or spring clip to hold the trigger back by clipping it to the trigger guard. this will get the sear out of the way -I still like a 17 rod even then. 2. feeding problems- the first thing to check is to see how tight the mag is . It should have a little movement to it (slack)not be solid . Check the mag well ( too tight)and the mag catch(can be too long-replace or file down) I have put metal mag wells in all mine. Thats my 2 cts. any way.
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BRNO Mod 2 ejector plate notice the bevel on the inside of the ejector
