Help ID DWM

Thanks for the info on year and model. I kinda thought it was commercial model since no military markings are to be found anywhere. here are so more pics I took after I figured out how to strip her.




is this magazine release spring original or some kinda put together by smith?



it seems kinda low tech to me but it works just the same.

Why is it called a "V" frame? are there major differences between models?

Thanks for your help.