Height of stock G17 rear sight?

[XMM]

Hi folks. I asked a similar question a number of months ago about the G20 or G21, but since my Glocktalk search engine isn't working, I'll have to ask it again.

My G17 fixed rear sight has only a line on it (on the right-hand side of the sight). This signifies a certain height in Glock language, but I can't remember what symbol on the sight goes with which height measurement. If I want to replace the stock one with the next SHORTER rear sight, what height (and symbol) do I want to buy?

Thanks. :)

[XMM]

Nevermind. I think the height of the solid, long single line is 6.5mm, and the long single line with a short line underneath is 6.1mm

PM me if I'm wrong, though. Thanks. :)

[WIG19]

L-R in ascending height:
6.1, 6.5, 6.9, 7.3mm
http://i26.photobucket.com/albums/c139/WIG19/Glock%20Tech/4_sights.jpg
Another of Butch's valuable photos.

:patriot: