Prototech in Carmel Indiana will thread the barrel on an existing rifle you may already have if you are interested in that as an option. They are very reasonable. PM me if you want contact info. Jim Lee
Well the last time I was out at 21st Century they had a couple
CZ 452's, bolt action with 16in threaded barrels. Give them a call on Monday-Not a bad drive for us Ft. Wayners!