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Early 39 sidemount for scope? #14087341 08/29/19
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Mesa Offline OP
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I found a beautiful 39 that was made before scopes were common on .22s. Now, at 76, I can't hit anything with iron sights, so a scope is mandatory for me.

This gun has two tapped holes about 2 1/2" apart on the left side of the receiver that look like they were made for a side mount. Does anyone know WHAT side mount that would be and if they are still made? I'll buy this gun if I can scope it without altering it!

Any ideas, knowledge gratefully accepted!


Was Mike Armstrong. Got logged off; couldn't log back on. RE-registered my old call sign, Mesa.
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Re: Early 39 sidemount for scope? [Re: Mesa] #14088575 08/30/19
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Re: Early 39 sidemount for scope? [Re: Mesa] #14088734 08/30/19
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JimHnSTL Offline
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Could you post a picture of the receiver holes? Are they vertical or horizontal?
The only factory side mount scope rail I recall for the 39’s were the ones that mounted to the barrel. I believe they only did that a couple years and then went to the factory holes on top of the receiver. If your holes are vertical and not horizontal then that is for a side mount aperture site.


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Re: Early 39 sidemount for scope? [Re: Mesa] #14088758 08/30/19
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Mesa Offline OP
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Jim, I haven't bought the gun and won't until I can figure out the scope deal. It's 'way too nice to modify, and I'll only buy it if I can scope it without modification. Still lookin' for an appropriate mount


Was Mike Armstrong. Got logged off; couldn't log back on. RE-registered my old call sign, Mesa.
FNG. Again.
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Re: Early 39 sidemount for scope? [Re: Mesa] #14089004 08/30/19
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JimHnSTL Offline
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Are the holes on the side of the action vertical or are they horizontal? That’s the important question to see if there is a mount.


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Re: Early 39 sidemount for scope? [Re: Mesa] #14090486 08/31/19
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Mesa Offline OP
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The holes are horizontal--straight into the action body as though they were meant to fasten something to the side of the receiver. Filled with headless plug screws and appear to be factory.


Was Mike Armstrong. Got logged off; couldn't log back on. RE-registered my old call sign, Mesa.
FNG. Again.
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Re: Early 39 sidemount for scope? [Re: Mesa] #14090753 08/31/19
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JimHnSTL Offline
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I think this thread might have your answer.
It seems they did factory drill for a side scope mount for a couple years.

https://www.rimfirecentral.com/forums/showthread.php?t=661369

Last edited by JimHnSTL; 08/31/19.

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Re: Early 39 sidemount for scope? [Re: Mesa] #14981225 06/19/20
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300_savage Offline
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Mesa, I'm curious if you got your Marlin back in action. I share your iron sight issues. Been moving to peep sights and may give a red dot a try soon.

Re: Early 39 sidemount for scope? [Re: Mesa] #14981627 06/19/20
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44mc Offline
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there was a side mount for a 39 i just cant remember the make. in 46 / 47 /48 / sears had marlin d&t the barrel for a scope mount .

Re: Early 39 sidemount for scope? [Re: Mesa] #15301133 10/10/20
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dian Offline
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Since the receiver is flat it should be a fairly straightforward operation to have a mount made from aluminum angle and a flat bottomed scope base. Use the existing holes and the rifle can easily be put back into original condition.

IC-B

Re: Early 39 sidemount for scope? [Re: Mesa] #15338964 10/23/20
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Rustyzipper Offline
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Why not put a scope on top? Be Well, RZ.

Re: Early 39 sidemount for scope? [Re: 44mc] #15341158 Yesterday at 07:45 AM
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JimHnSTL Offline
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Originally Posted by 44mc
there was a side mount for a 39 i just cant remember the make. in 46 / 47 /48 / sears had marlin d&t the barrel for a scope mount .

Yes, you can tell if your gun was a sears sold Marlin by removing the fill screws. If the threads are in the white the barrel was drilled and tapped afterwards by either Marlin or some gunsmith. If the threads are blued then it was a rifle manufactured for sears specifically. The only 39 A rifles drilled and tapped at the factory prior to being shipped where the ones made for sears.
Edit:
The years Marlin made them for sears was 54 and either 53 or 55. Can’t remember at the moment. It was only 2 years as I recall.

Last edited by JimHnSTL; Yesterday at 07:48 AM.

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Re: Early 39 sidemount for scope? [Re: Mesa] #15343369 Yesterday at 09:17 PM
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Originally Posted by Mesa
I

This gun has two tapped holes about 2 1/2" apart on the left side of the receiver that look like they were made for a side mount. !


The two screws go into the ejector assembly which is internal to the receiver.

I believe your only option would be to drill and tap the receiver. Finding a gunsmith able and willing to do it is another thing.

When I was young and brash I probably would do it. But now I would probably would leave it be.

Michael


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