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Old 02-23-2014, 20:09   #1
rcupka
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Glock model 17 Gen 4 RTF

I just bought my third Glock, a Model 17 Gen 4 RTF from a friend. I thought all Gen 4's has the inter-changable back-strap, but this one does not.

What is the genealogy on the Gen 4's?

Is this an in-between model, early Gen 4? etc... I would like to know what I have?

Thank you in advance

Dick
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Old 02-23-2014, 20:50   #2
Butch
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Hi Dick, welcome to GlockTalk!

Early Gen4's did indeed come with two attachable backstraps to make the grip bigger. New one's now come with four.

Does it say 'Gen4' on the slide like the one on the right in this picture? (click the pic to enlarge it)

General Glocking
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Old 02-23-2014, 20:53   #3
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Post a pic, that way we can tell you what you have
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Old 02-23-2014, 22:50   #4
Andy W
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Quote:
Originally Posted by rcupka View Post
I just bought my third Glock, a Model 17 Gen 4 RTF from a friend. I thought all Gen 4's has the inter-changable back-strap, but this one does not.

What is the genealogy on the Gen 4's?

Is this an in-between model, early Gen 4? etc... I would like to know what I have?

Thank you in advance

Dick
Is it possible your friend forgot to include/lost the backstraps? Also if it is an RTF2 model, that is just a variation of the Gen 3.
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Old 02-23-2014, 23:00   #5
DJ Niner
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I think you might have a Gen3 RTF2 model; they can easily be mistaken for a Glock Gen4 if you're not familiar with both models.

All Gen4 models should say "Gen 4" on the left side of the slide, immediately after the model number, as shown in Butch's photo, above.

Here is a frame comparison photo, with the Gen4 at the top, and a Gen3 RTF2 right below it (click photo to enlarge it):

General Glocking

The Gen4 models have about 12 flat-top pyramids per inch on the grip surface:

General Glocking




Here is a photo of a Gen3 RTF2 assembled. This particular pistol has the curved "fish gill" type slide gripping grooves, but later Gen3 RTF2 models have the normal straight slide gripping grooves (click to enlarge):

General Glocking

The Gen3 RTF 2 models have about 20 smaller pyramids per inch on the grip surface:

General Glocking

Another quick way to tell them apart, is the Gen3 RTF2 has the pyramid gripping surface extended up into the thumb rest area; Gen4 models, as well as all other Gen3 Glocks, have smooth thumb rest areas. Check the frame comparison photo, above, to see the difference.





.

Last edited by DJ Niner; 02-23-2014 at 23:19..
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Old 02-23-2014, 23:23   #6
carsplanes&guns
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Click image for larger version

Name:	ImageUploadedByOhub Campfire1393219112.460507.jpg
Views:	25
Size:	290.4 KB
ID:	238217 If it says "MBS" in that area it's a back strap compatible frame. Also the early gen4s didn't have a indent on the rear of the frame for the beaver tail back straps

Last edited by carsplanes&guns; 02-23-2014 at 23:24..
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Old 02-24-2014, 08:55   #7
rcupka
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Thank you, I will take some images tonight to better identify my model. The pictures posted have been helpful.

Dick
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Old 02-24-2014, 20:19   #8
rcupka
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I am embarrassed, I thought the straps came out like some of the other brands, I did not realize they stacked on the base grip. The previous owner had not given me the back straps yet. I also looked on YouTube and saw how they install.

Thanks for the help guys!

Dick
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