Glock generations?

[BEARMAN]

I see ads for GLOCKS with something like 2nd generation. WHAT does this mean , what are the differences, and to date how many generations are there? I gather these are the same models but with improvements or changes.

 

[bear.23]

Look on the web and it's not hard to find...
The Glock frame has evolved through 3 styles known as generations. There are quite a few sub-generations, limited runs and experimental frames but these are the major breakdowns:
1st generation smooth grip no finger grooves no rails
2nd generation textured grip no finger grooves no rails
3rd generation textured grip finger grooves accessory rails*
*accessory rails are not available on the subcompact Glocks

 

[Six Star]

There's also the G17 Gen 3.1 that has the extra pin in the frame.

 

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[BEARMAN]

THANKS , that clears it up a little. I did find a neat GLOCK SITE ( www.glockfaq.com ) but your explaination was better that anything I found.