WOULD IT BE SAFE AND COULD IT BE DONE .I WANT TO BUILD A 458 LOTT 1ST CHOICE OR 458 WIN MAG OR A 458WHAT EVER .ITS MARKED BNZ WHICH I BELIEVE IS STYRE SORRY FOR THE SPELLING,I HAVE A TIMNEY TRIGGER AND THE SAFETY HAS BEEN CHANGED.I HAD IT CHECKED BY A GUNSMITH AND IT IS SOUND.ANY IDEAS OR FEED BACK.OR SHOULD I JUST BUY A CZ.