M3 combo tool help

[semperbee]

Can anyone indentify the manufacturer of this M3 combination tool? I've looked online and found info on the M3A1 tool but nothing on the M3s. The only marking is C-64167.

[Quarterbore]

I don’t think anyone can say for sure. Bill Rica was/is an expert on these and in his writings I never saw him say one way or the other.

Yours with the part number is an early example and likely dates to gas trap period and at latest pre-WW2. It was made by Springfield or Winchester but if I was to guess it’s more likely Springfield but that’s my guess and I can’t support that guess.

[Twinson]

I would say SA also.

[cccmp]

Not that my study is scientific or with merit based upon the small sample that I have examined or owned but your example based upon what I've seen leads me to believe it may have been made by WRA. We know the numbered/early variants were made by SA, WRA (or provided by), and AR as a minimum. Your tool does not match the characteristics of early SA so I suspect a different maker. AR made tools use a different font so they can be ruled out, so that leads me to believe that your milled tool is made/provided by WRA as part of their contract IMHO for what its worth.