Where can you get a slug barrel for a 12 gauge JC Higgins Model 60 shotgun or at least a smoothbore barrel with no polychoke and a vented rib?

The model 60 was built by High Standard Manufacturing for Sears 35 years before any thing like a real slug barrel was even thought of .The gun is 45 +years old.Rifled slug barrel are a late thing of 1980s The gun was offered with vent rib barrel no poly choke but as far as I know it was full choke only . These are Excellent old guns . The will shoot abuot any 12 ammo light field loads to heavy long range ammo no jamming very reliable . But they are vintage arms the gun was made from 1953 to 1956 these nice old guns should be apreciated for what they are not what they are not . It would be easier to go after a more modern gun. Than to consider modifing and possibly botching up a nice old model 60 The barrel on this model is screwed into the receiver and is not interchangeable by the typical user. Both plain and ventilated rib barrels were available, and Sears offered a model with their 'PowerPac' style external adjustable choke. We get barrels from time to time and sell them to the gunsmith trade for replacement barrels. They require specialized tools and knowledge to install. As mentioned above, they were never available with a rifled barrel. One option might be to have your existing barrel fitted for interchangeable choke tubes. This will run about $125 give or take, not alter the appearance of the shotguns, and you will be able to use whatever choke constriction you desire as well as rifled choke tubes for slugs. The JC Higgins Model 60 is NOT a collectors item, so you will lose no value in modifying it.