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Posted: 2/14/2012 11:53:57 AM EDT
Just wondering, thinking about building a glock using a g17 frame
Link Posted: 2/14/2012 12:19:56 PM EDT
Make sure it is a 3 pin Gen 3 if you plan on putting a different upper on it
Link Posted: 2/14/2012 12:47:44 PM EDT
Originally Posted By gqllc:
Make sure it is a 3 pin Gen 3 if you plan on putting a different upper on it


ok will do i thought they were all 3 pin?
Link Posted: 2/14/2012 5:09:15 PM EDT
[Last Edit: 2/15/2012 5:03:53 AM EDT by voyager4520]
No, early Gen3 9mm frames were 2-pin, curiously you can see a molding line where the locking block pin would go:


As long as the frame is Gen3 3-pin or Gen4, the following models all use the same frame:
1. 17,17L,22,24,31,34,35,37
2. 19,23,25,32,38
3. 20,21
4. 26,27,28,33,39
5. 29,30

You can't use a Gen4 slide on a Gen3 frame, and I wouldn't try it vice versa either.(you can swap between Gen3 and Gen4 in the sub-compacts) The ejectors are different for each caliber, and the 45GAP models use a different trigger bar and slide stop.
Link Posted: 2/16/2012 3:53:25 AM EDT
Also, curiously, all Gen 3, 3pin frames aren't reinforced for .40 & .357Sig.
Link Posted: 2/16/2012 6:07:19 AM EDT
[Last Edit: 2/16/2012 6:16:08 AM EDT by voyager4520]
All the 3-pin 9mm frames I've seen had the extensions on the front frame rail insert to stop frame battering. Do you know approximately when those extensions were added to 9mm frames? I always thought it was at the same time the locking block pin was added to the 9mm frames.
Link Posted: 2/16/2012 9:51:21 AM EDT
Originally Posted By voyager4520:
All the 3-pin 9mm frames I've seen had the extensions on the front frame rail insert to stop frame battering. Do you know approximately when those extensions were added to 9mm frames? I always thought it was at the same time the locking block pin was added to the 9mm frames.


I believe I recently saw on another forum that the frames were reinforced in 2002. I don't know how many 3-pin frames were made that weren't .40/.357 compatible. Glock will give you that info over the phone, by serial #.

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