[Jdoc]

My grandfather hunts with a marlin goose gun and his eyes are not what they used to be. I was looking at his gun trying to figure out what I can do to help and I noticed two holes in the side of the action. I was wondering if they are for a scope mount? If so where can i get one for him? Thanks ahead for all the help.

[35Rem]

Not sure...but probably for a receiver sight (peep type).

You might try a fiber optic sight to replace the front bead.
Like this:
http://www.midwayusa.com/eproductpage.exe/showproduct?saleitemid=711539&t=11082005

It may also be possible to mount a red dot type sight, though I'm not sure how.

[rcmodel]

Your gun is drilled & tapped for a Lyman or Williams receiver peep sight.
The two little screws would not be strong enough to hold a scope with a 12 ga shotguns recoil.

Anyway, it would be very difficult to mount a scope or red-dot because of the split receiver that the bolt handle rides in.
It would hit the scope when opening, unless side-mounted off the left side of the receiver.

I think 35Rem's suggestion of a fiber optic front sight may be the best choice.

http://i81.photobucket.com/albums/j219/rcmodel/KTOG/1224.gif
rcmodel