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Glock Firing Pin Hole

Flash Gordon

Aluminum
Joined
Jan 29, 2004
Location
Chicago, IL
How is the firing pin hole on a Glock slide formed?
The firing pin hole is rectangular, approximately .042 by .105 and its about 3" from the face of the slide.
Are these formed by EDM or broaching, or some other method?
Thanks!
 
My guess would be sinker EDM from rear of slide, through FP channel.

This would allow FP hole edges to be slightly concave on rear side (stronger)
 








 
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