There are no barrels being produced for the 120. However, there are some available on eBay and other places from time to time. Usually, the 26", 28" and 30" barrels go for less than $100, but the MXR 38" and 40" go for around $200 each. Slug barrels $125 to $150 smooth bore, and $250+ for a custom rifled slug barrel. If you need help finding one, e-mail me, jorpenif@Yahoo.com
1300
1300
Try a 1300 barrel
The price range on your shotgun is between 165-200 dollars depending on the amount of finish being between 60%-90%.The Marlin model 120 magnum shotgun was made from 1971-1985.
The model 120 originally sold for $150. One that is in mint condition will bring about $275. However, if you also have the MXR 40" barrel, it alone is worth about $200.
The Marlin firearms company produced pump action shotguns from 1898(the Marlin model 1898)all the way up to 1985(The model 120 Magnum shotgun).during that time span Marlin made 17 different model pump action shotguns.
Answer the glenfield by marlin is compatible with marlin 120 12ga barrels are available for the 120 the only difference is the stocks wich are also interchangable the 120 is higher quality I love my glenfieldThat model is obsolete and you are not going to find a slug barrel. If you must use slugs, you can have the existing barrel modified to accept interchangeable choke tubes and use a rifled tube when shooting slugs.
I presume you are asking about a Marlin model 120 pump action shotgun. In good condition a standard 120 is worth about $200-$250. If you are asking about The Revelation model 120 that was manufactured for Western Auto Supply by Marlin, then you are looking at a generic model 60. Worth about $75-$125 dependent on condition.
Not recommended.
you can search for it on google.
A guy on eBay has a store called Rediscovered Shooting Treasures (RST). He sells reproductions of the Marlin Model 120 manual.
THREE one