Help I need to know the sight base size on 1957 model 39

[fordwannabe]

Hi all, I am at work and trying to put together my midway order and the last thing I need is a new front sight for my 1957 model 39 but I don't know the base size. I think it was different than any of my 336's and just want to get the right one the first time. Any help on which one to order looking at lymans brass bead. thanks for any help. Tom

[Hobie]

Are you talking about the dovetail? All 3/8" so far as I know.

[fordwannabe]

I figured you'd be the first one to respond. Thanks Hobie I could have sworn it was different but I'll take your word for it, any idea on the height of the original.? I know I'm a pain but it's what i do. thanks Tom

[jdad]

Your 39A had a ramped sight, screwed into the barrel, that had a dovetailed insert on top, and a round hood.

What part do you need?

[fordwannabe]

I need the insert. Thanks

[jdad]

These guys will have all the old, original, Marlin 39A parts

www.dickwilliamsgunshop.com


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[Pete44ru]

[Help I need to know the sight base size]


The issue front sight ramp is .340" wide and has a 3/8" female dovetail cut into it for ANY medium ("M") base width (.340") front sight blade with a 3/8" male dovetail, and of the proper height to zero the rifle.

IIRC, the issue front insert/blade's height was between .290" - .310", and had a gold bead.

It may be replaced with ANY bead of the same base width, dovetail size, and overall height - Since it's common for owners to change the front sight to a different bead material that may suite them or their eyesight or shooting conditions better than the issue gold bead.
For instance, I installed a fiber-optic front blade.
An Ivory bead does it for other folks.
Some folks also elect to change to a different SIZE of BEAD (There's two bead sizes: 1/16"/fine & 3/32"/coarse).
YMMV.

[fordwannabe]

Thank you very much. Tom