I just scored a NIB threaded, iron-sighted barrel and nice oil-finished Turkish walnut stock for the CZ 457 Premium. Gonna swap out the parts on my MTR and futz around with irons a bit. Kinda-sorta new gun for less than half the going price. Was never a big fan of swapping barrels, but this looks like it’ll be fun, and as my sons used to tell their mother, “there’s no net gain of guns”. No loss either!