Brent
You did not say if your Unit Marks were pre or post WWI or what year of production your gun was, very early DWMâ??s are a study to themselves, and post WWI new production is different. A little more information may be needed to properly answer your question. Also take the pin out and check for sure.
Do a search on the forum, good information here on firing pin serialization.
Let us know if you still need help?
Vern
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