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First and foremost as with any weapon make sure 100% that is unloaded both chamber and magazine.
-retract the slide/pump half way and unscrew the magazine tube cap and remove the barrel.
-unscrew the buttpad from the stock and have an extended socket drive handy w/a 7/16th socket and remove the screw that hold the stock to the action.
-punch out 2 drift pins for the trigger guard assembly and pull up on the trigger guard to remove from action.
- remove the positive shell stop and the spring shell stops. these are recessed in to the receiver sides and are held in by the two drift pins.
-then make sure the slide is locked in the forward position and look in the action from the under side and pinch the shell lifter ends inward with a flat head screw driver and make sure both are off from the holding post that are fixed into the receiver.
-this will then allow you to remove the entire bolt assembly and shell lifter by pulling it forward and the slide action will come off the magazine tube.
These are the firearm specific ways from dissassembling the Marlin model 120 pump action further parts brake down follow all other similar shotgun makes/models.
What else can I help you with?
What is the value of 12 gauge marlin model 120 magnum serial?
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.
When was the Marlin Model 26 shotgun made?
The Marlin model 26 shotgun was made from 1909-1915.
What is manufacture date for marlin pump shotgun with hammer exposed model no 24?
The Marlin model 24 shotgun was produced by Marlin from 1908-1915.
When was the Marlin Model 21 shotgun made?
Your Marlin model 21,which was the straight grip version of the model 19 shotgun,was made from 1906-1907 by the Marlin Firearm Company.
How Old Are Marlin Pump Action 12Guage Shot Guns?
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.
What year was the model 24 marlin shotgun made?
The Marlin model 24 shotgun was made during the years 1908-1915.
How old is your marlin model 1897 12 gauge shotgun serial number 65859?
Marlin made the model 1898 shotgun,while Winchester made the Model 1897 shotgun,A Winchester model 1897 shotgun with the serial number provided indicates that it was made in 1900.The Marlin model 1898 shotgun was made from 1898-1905.
What is a model 420 marlin shotgun?
it is a 410 ga pump shotgun
Is a Marlin model 57 22 magnum good?
Yes
Marlin model 19s 12 Ga shotgun sn 119395 can you give me any history on this shotgun?
Go to Marlin model 19s AND 12 Ga shotgun sn 199295 wikipedia
What model is your marlin shotgun latest pat 1896 and serial no13852 It is a 12g pump?
You have a Marlin model 1896 slide action shotgun, however, it is a Blackpowder shotgun and you will need brass hulls.
How do you find the age of a marlin 55 shotgun?
Marlin Fireamrs by Brophy.I can say that the Marlin model 55 shotgun was made from 1950-1965.The marlin model 55 goose gun which had a 36in barrel was made from 1962-1996.
