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1/22/2020 12:12:56 PM
Posted: 1/19/2015 8:46:36 AM EST
I'm specifically shopping for a Glock 19 but maybe the answer is applicable across models?

When searching in the interweb, many vendors don't provide what gen it is [which I think is stupid, but what do I know?] so is there a way using serial numbers, other numbering systems or visually to discern a gen 3 from a gen 4?


Link Posted: 1/19/2015 9:32:06 AM EST
One way is the number of magazines included. If it comes with 3 its gen 4, comes with 2 its gen 3.
Link Posted: 1/19/2015 9:43:56 AM EST
Well aside from the slide being stamped "Gen 4", Gen 3 has a smooth trigger face, Gen 4 has ridges.
Link Posted: 1/19/2015 10:06:54 AM EST
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Originally Posted By SirSqueeboo:
. . . Gen 3 has a smooth trigger face, Gen 4 has ridges.
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That depends more on the particular model than the generation.

Visually, the Gen 4 has the additional backstraps, a much more aggressive frame texture, and the magazine release button is much larger.

Gen 3:

Gen 4:

Link Posted: 1/19/2015 10:50:20 AM EST
The removable backstraps are one of the ways to visually tell. Probably the easiest way is to actually call the vendor and just ask if you are not sure. Most places are very helpful.

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