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AR15.COM
10/17/2007 5:09:02 PM EDT
I am redrawing this blueprint and some of the data is difficult to discern.. Can anyone tell me what  the 90 degree csk line is is supposed to be pointing to?
This is a frontal view of the 1911 (slide only) as if you are looking down the barrel..
The drawing before final editing
Thanks in advance..
10/17/2007 6:09:40 PM EDT
[#1]
Anyone?
10/17/2007 6:14:01 PM EDT
[#2]
It appears to be a 90 degree countersink use to break the edge to allow the bushing to start into the slide.