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1/25/2018 7:38:29 AM
Posted: 2/23/2006 11:22:40 AM EST
I tried searching and went to a few Glock websites, and nada. What is the difference between Gen I, II, III?

I have a brand new 21 and a 27 that is about eight years old.

Thanks for your help.
Link Posted: 2/23/2006 11:25:52 AM EST
Both of your guns are gen 3

Link Posted: 2/23/2006 11:34:29 AM EST
Great pic, thank you.
Link Posted: 2/23/2006 10:19:45 PM EST
There are also some Gen 2.5's that have finger grooves, but lack the light rail. Or the other way around. Also newer Glocks have 3 pins in the frame, while older ones have 2 pins. YMMV...
Link Posted: 2/24/2006 4:40:42 AM EST
[Last Edit: 2/24/2006 4:41:04 AM EST by HotRod9mm]
2.5 gen, finger grooves, no rail.

Only Pre '02(IIRC about the year) 9mm receiver(frames) are 2 pin, all other calibers have always been 3pin
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