is that a lone wolf barrel? maybe defective barrel

It's a KKM Barrel

Thanks for posting the pics Teichi. 

Holy shit that's scary..

Thanks Teichi ! 

Can't even imagine holding on to that pistol when it happened.
Barrel pops in half. 

It's a KKM Barrel

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For what it's worth, here are 2 pictures of KKM kabooms.
One pic was at KHSC almost exactly 2 years ago.
The other pic is the current topic bbl.

==============
For what it's worth, here are 2 pictures of KKM kabooms.
One pic was at KHSC almost exactly 2 years ago.
The other pic is the current topic bbl.

it's almost as if they were designed to fail that way

is the frame and slide damaged as well?

it's almost as if they were designed to fail that way

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As I recall, the kaboom 2 years ago was almost certainly a bullet stuck in the bbl. The picture seems to support that conclusion.
In this new kaboom there is a bright spot in the bore at about the same location, but I don't see any bulge.
So I'm not even going to try to make any sort of guess.

Apparently the word on the street is if you want to shoot reloads in your 40, 45 and 10mm Glocks you should replace the stock barrel.

https://www.google.com/?gws_rd=ssl#q=glock+kaboom

I think that is an Aftermarket barrel, am I right?

It's a KKM Barrel

nevermind...

I think it looks funny that the barrel split so perfectly longitudinally. I have never seen a barrel split like that before.

Yeah that struck me as odd too.  From the KKM site:

All KKM barrels are made using certified 416R gun-barrel quality stainless steel bar stock. These barrels are then heat treated and vacuum tempered to 45 RC. All of our barrels are CNC machined to obtain superior dimensional tolerances over stock. Because of our advanced proprietary button rifling process, all KKM barrels offer greater accuracy over stock barrels. Our Glock barrels come with fully supported SAAMI spec. match chambers for shooting factory or reloaded ammunition.

Hypothetically speaking I'm wondering if it's a combo hot load and a manufacturing mistake such as with heat treatment.



Teichi - thank you for posting pics.

it's almost as if they were designed to fail that way

It just stuns me to think that anyone would design a barrel to fail in that manner.  I don't understand how the barrel would split horizontally like that.

Also I was shooting a couple of weeks back and a guy had an issue with his pistol.  Turned out to be a live round on top of a squib.  The barrel in that case (HK) bulged and locked up the slide but there was no other signs of failure such as bulged slide, expanded (polymer) frame or anything else I could see.

It just stuns me to think that anyone would design a barrel to fail in that manner.  I don't understand how the barrel would split horizontally like that.

Also I was shooting a couple of weeks back and a guy had an issue with his pistol.  Turned out to be a live round on top of a squib.  The barrel in that case (HK) bulged and locked up the slide but there was no other signs of failure such as bulged slide, expanded (polymer) frame or anything else I could see.

HKs are actually tested with a squib load when they are torture testing

HKs are actually tested with a squib load when they are torture testing

I have confidence that the large manufacturers/barrel suppliers would test and QC test their products.  I wonder how many of these aftermarket guys continue QC testing their products.