my old trick is baking soda and vinigar that always does the trick
Your Marlin model 99 which was a Promotional model and made only in 1959-1960 will bring between 75-150 dollars on today,s market.
Google Numrich Arms. They have many parts.
Plug the phrase "Marlin Model 99M1" into Google, and you'll find a wealth of data and sites relating to this firearm.
Brand new about $195.00. * They have been made since 1960 and I recently bought a used one for $60.00, in excellent condition. Depends on the letter/letters following the Model #... 99 99C 99DL 99E 99M1 etc..
The marlin model 39A is the rifle model,while the Marlin model 39M is the carbine model.
Contact Marlin customer service through their website, and request an owner's manual for your rifle. They are free.
the western auto model 120 was made by marlin.The marlin model 99 was made between 1959-1960.
Visit the Numrich Marlin/Glenfield page. Or the Marlin home page to download the PDF version of the Model 60 manual. These two rifles are very similar in design. http://www.gunpartscorp.com/catalog/Models.aspx?catid=310 Marlin downloads. http://www.marlinfirearms.com/customersupport/manuals.asp
Go to stevespages.com/page7b.htm and look for the manual.
That's hard to say since there are several different ones listed for the model 60 with at least three different lengths. They are all .22's, so you may be able to modify a longer one to fit your model 99. See Numrich arms: http://www.gunpartscorp.com/catalog/Products.aspx?catid=11759
Marlin 81
model 55 the original marlin goose gun