Glock calculator.
https://s3-us-west-1.amazonaws.com/h...r_fullsize.jpg
Previously:
https://www.homemadetools.net/forum/...223#post203902
https://www.homemadetools.net/forum/...920#post194666
https://www.homemadetools.net/forum/...555#post205450
https://www.homemadetools.net/forum/...566#post201187
https://www.homemadetools.net/forum/...350#post169499
