[bill4282]

How does one tell the difference between generations on Glocks? I have a 19 but really not sure what gen I have

[silversport]

regular frame with no finger grooves and half moon at magazine opening???...may be a Gen 2
finger grooves alone???...may be a Gen 2.5

finger grooves and light rail???...may be a Gen 3

finger grooves, light rail, "fish gill" slide grasping grooves and sharp dot pattern frame?...may be a Gen 3 Rough Textured Frame

finger grooves, light rail, less sharp dot pattern frame and Gen4 on the slide???...Gen4

that'll get you started...more will chime in...

Bill

[INEEDMILK]

[GRT45]

The following thread is a great place to find the answers to all your questions about identifying the different Gens and variations of a Glock pistol. Many pictures are included by the thread's author, DJ Niner, including the picture in the previous post. Glock generations, "gills", 2- & 3-pin frames, and other helpful photos

[BMiracletx]

A picture is worth a thousand words.....

[bill4282]

Thanks for the help. Bought new in 2002 and appears to be gen3. Can gen 3 be upgraded to Gen 4?

[BMiracletx]

Nope. Have to have the gen4 frame, slide, and recoil spring. Might as well just buy a gen4.

[fortheboys]

If it works, it's a gen 2