1911 model / drawing showing proper location and size of mag catch lock

[archer183]

I have the 1911A1 iges file downloaded from firearm files, but it lacks the location and size of the mag catch lock groove, does anyone have a link to a correct file with the groove in it or a dimensioned drawing showing the groove location, size, tolerance, etc?

thanks

[TSTom]

What cad program do you use I have it in Mastercam  If you have the mag catch you can probably measure it I think that's what I did