Win Mod12 Trench Gun Conversion

[baltimoreed]

This is what a poster on machinegunboards said to my M12 build thread there. He says 2 3/8 inches from the stock toe [not including the buttplate]. I blued my shield as it came in the white. I also replaced the supplied soft screws with nice Brownells filister screws. I built my gun about 6 years ago.

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[Madcap]

Attachment 124767
This is what a poster on machinegunboards said to my M12 build thread there. He says 2 3/8 inches from the stock toe [not including the buttplate]. I blued my shield as it came in the white. I also replaced the supplied soft screws with nice Brownells filister screws. I built my gun about 6 years ago.

Thanks for the info - looks like exactly what I was hoping to find. Is the 2 3/8 inches from the toe measured from the end of the swivel or the rear screw hole? If so that locates the front screw hole exactly 3 1/2inches from the toe of the stock....maybe that's where the original measurement I found came from. However not to be contrary, I resized three different original M12's to full scale and they all indicated the rear end of the swivel at 3 1/2 inches.....(?)

If you cold blued your shield yourself it looks like it matches very well.

[Tom Doniphon]

The swivel on my Model 12 trench gun is exactly 3-1/2 inches from the end of the buttstock wood to the edge of the swivel base. The muzzle is flush with the end of the bayonet adaptor (there is no protrusion of the barrel beyond the end of the adaptor).

Although a Thompson submachine gun swivel will work, it is not what was used on the Winchester trench guns. Winchester used its own proprietary swivel. It's the same one used on some of the other Winchester firearms.