Generation 3 Glock Locking Block Differences

[Iraqgunz]

It's been a few years since I have been to the Glock Armorer Course so someone help me out. Why is the locking block different on a Gen 3 FDE G19 as opposed to the locking block in the Gen 3 G19 with black frame? These are both 3 pin locking blocks.

I recently had to do a teardown and rebuild of a friends G19 and her locking block and trigger pin were broken. While examining it, I noticed that it is different and the one from my FDE one would not interchange.

[JHC]

Interesting. I've got a Gen 3 19 that must be 12 years old or so and a FDE from last year. I must take a look and see this.

btw - how does one break a locking block in a 9mm? Immense volume or just a part that went bad?

[FailureDrill-P099]

This hopefully will help you. Depending on how old the Glocks are. Only change I am aware of is the use of MIM locking blocks since about 09. The new ones should work with older Glocks. Got any pics so we can see the differences?

http://looserounds.com/2014/09/30/buying-le-trade-in-used-glocks-what-to-look-for/

[kantstudien]

btw - how does one break a locking block in a 9mm? Immense volume or just a part that went bad?

Usually from not replacing the recoil spring assembly. Then the gun gets battered, usually resulting in a broken pin first but sometimes the locking block cracks.

[moonshot]

Very interesting thread. I noticed on the photo provided in the link of the various locking blocks that the mim locking block on the right also shows a series of numbers carved into the polymer frame. These are not the serial number on the frame. I've noticed these numbers on several Gen 3 Glock frames in resent years, but not on Gen 3 frames from several years ago.

Anyone know what these numbers signify?

[Detmongo]

Usually from not replacing the recoil spring assembly. Then the gun gets battered, usually resulting in a broken pin first but sometimes the locking block cracks.

I've had this happen a few times. For me it is usually not changing out the recoil spring when i should and shooting 124 gr. +p gold.

[Iraqgunz]

Hopefully this will explain it.

Glock 19, Gen 3 black production 2008. Notice the plastic along the frame where the locking block sits. My buddy said that his 2012 production G19 is the same.

http://i152.photobucket.com/albums/s188/iraqgunz/G19%202008%20Black.jpg (http://s152.photobucket.com/user/iraqgunz/media/G19%202008%20Black.jpg.html)

Glock 19, Gen 3 FDE production 2012. Locking block is exposed.

http://i152.photobucket.com/albums/s188/iraqgunz/G19%202012%20FDE.jpg (http://s152.photobucket.com/user/iraqgunz/media/G19%202012%20FDE.jpg.html)

Gen 3, 3 pin locking blocks. Left is from the 2008 production pistol. The sides of the block are smooth. Right is from 2012 FDE. Sides of the block are flared.

http://i152.photobucket.com/albums/s188/iraqgunz/Gen%203%20Locking%20Blocks.jpg (http://s152.photobucket.com/user/iraqgunz/media/Gen%203%20Locking%20Blocks.jpg.html)

Gen 3, 3 pin blocks. Locking block rails are also different from one another on the inside.

http://i152.photobucket.com/albums/s188/iraqgunz/Gen%203%20Locking%20Blocks%20Comp.jpg (http://s152.photobucket.com/user/iraqgunz/media/Gen%203%20Locking%20Blocks%20Comp.jpg.html)

[JBecker 72]

G19 gen 3 black frame. Brass collection date 9/16/2014

http://i149.photobucket.com/albums/s73/hownowbrowncow_02/Misc/74A669C2-A935-4DBD-990C-27C5FC83FD0B_zps1r9i3kye.jpg (http://s149.photobucket.com/user/hownowbrowncow_02/media/Misc/74A669C2-A935-4DBD-990C-27C5FC83FD0B_zps1r9i3kye.jpg.html)

[walkin' trails]

Then there's my Gen1 17 and Gen 2 19 that have both seen a boat load of 115 and 124 grain +P+, didn't get the recoil from springs changed out as often as currently recommended, and still have their original locking blocks & trigger pins. With the pistols chambered in 40 I can understand...

[tonyxcom]

I just checked my Gen 3 19's and I have both revisions as well. The old style has RGW prefix.

[mayonaise]

The frame change in the gen3 G19/23/32 is so that the newer gen3 G19/23/32 frames can accept the gen4 locking blocks. More efficient, one less part to manufacture.

[tonyxcom]

I bet they still do runs of the old part though as there are a lot of those guns in service.