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Posted: 2/11/2016 2:47:47 PM EDT
Someone posted these pics on r/guns and he has no idea what caused it. He said he was shooting Wolf steel cased ammo. I've never seen the bolt carrier peel apart like that.           |
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Posted: 2/11/2016 2:49:09 PM EDT
[#1]
Nothing useful to add, but DAMN!!!
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Posted: 2/11/2016 2:50:56 PM EDT
[#2]
Second picture.
Look at the round on the far right. That's quite the deformed case. |
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Posted: 2/11/2016 2:51:38 PM EDT
[#3]
What does your face look like?
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Posted: 2/11/2016 2:51:48 PM EDT
[#4]
Quote HistoryQuoted:
Nothing useful to add, but DAMN!!! |
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Posted: 2/11/2016 2:52:06 PM EDT
[#5]
That is crazy, Ive never seen a kaboom that severe. Hope the guy is OK and not a lefty.
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Posted: 2/11/2016 2:52:29 PM EDT
[#6]
The UTG red dot caused all this to happen
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Posted: 2/11/2016 2:53:00 PM EDT
[#7]
Probably his foam cutting job.
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Posted: 2/11/2016 2:53:12 PM EDT
[#8]
Looks like someone tried to fire a GLOCK through an M4
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Posted: 2/11/2016 2:53:20 PM EDT
[#9]
Yes, I know what caused this.
A "just right" level of overpressure seized the bolt and extension together. The gas had nowhere to vent fast enough, so the carrier grenaded. That's the damage that results from this incredibly uncommon failure. Lower pressure and lugs shear which vents the gas safely, higher pressure and the barrel/bolt fracture which again vents the gas. |
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Posted: 2/11/2016 2:53:22 PM EDT
[#10]
Quote HistoryQuoted:
The UTG red dot caused all this to happen I have the same one on my .22lr AR. I really like it for the money. |
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Posted: 2/11/2016 2:53:33 PM EDT
[#11]
With Russian ammo, bullet shoots gun!
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Posted: 2/11/2016 2:54:06 PM EDT
[#12]
Classic lack of over lubrication.
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Posted: 2/11/2016 2:54:13 PM EDT
[#13]
Quote HistoryQuoted:
What does your face look like? The only injury was to the shooter's shoulder, he's otherwise unharmed. This is from /r/guns. |
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Posted: 2/11/2016 2:54:33 PM EDT
[#14]
Quote HistoryQuoted:
Second picture. Look at the round on the far right. That's quite the deformed case. I'd guess that one was at the top of the mag during "rifle go boom" time. |
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Posted: 2/11/2016 2:54:45 PM EDT
[#15]
Quote HistoryQuoted:
I have the same one on my .22lr AR. I really like it for the money. Quote HistoryQuoted:
Quoted:
The UTG red dot caused all this to happen I have the same one on my .22lr AR. I really like it for the money. Its only a matter of time 
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Posted: 2/11/2016 2:55:28 PM EDT
[#16]
Looks like wrong powder or way over charged case.That gun Grenaded like a pipe bomb.
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Posted: 2/11/2016 2:55:31 PM EDT
[#17]
To answer the question in the title, yes, I do know.
Physics. It wins every time. |
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Posted: 2/11/2016 2:57:06 PM EDT
[#18]
Quote HistoryQuoted: Yes, I know what caused this. A "just right" level of overpressure seized the bolt and extension together. The gas had nowhere to vent fast enough, so the carrier grenaded. That's the damage that results from this incredibly uncommon failure. Lower pressure and lugs shear which vents the gas safely, higher pressure and the barrel/bolt fracture which again vents the gas. How is that possible if some guns feature the ability to turn gas off to prevent the bolt from cycling or opening? |
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Posted: 2/11/2016 2:57:14 PM EDT
[#19]
Going with an under loaded "squib" round fired with the projectile stuck in the barrel, followed by firing a normal round resulting in crazy high chamber pressure. See how the barrel extension ruptured, and the bolt never unlocked?
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Posted: 2/11/2016 2:57:29 PM EDT
[#20]
You just fill the case up to the top with whatever powder is cheapest, right?
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Posted: 2/11/2016 2:57:34 PM EDT
[#21]
Quote HistoryQuoted:
Yes, I know what caused this. A "just right" level of overpressure seized the bolt and extension together. The gas had nowhere to vent fast enough, so the carrier grenaded. That's the damage that results from this incredibly uncommon failure. Lower pressure and lugs shear which vents the gas safely, higher pressure and the barrel/bolt fracture which again vents the gas. The kind of overpressure from a case with too much or the wrong powder or perhaps a barrel obstruction. At least no one said it was fired out of battery (yet, this is GD) |
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Posted: 2/11/2016 2:58:07 PM EDT
[#22]
Quote HistoryQuoted:
I'd guess that one was at the top of the mag during "rifle go boom" time. Quote HistoryQuoted:
Quoted:
Second picture. Look at the round on the far right. That's quite the deformed case. I'd guess that one was at the top of the mag during "rifle go boom" time. I agree. |
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Posted: 2/11/2016 2:58:13 PM EDT
[#23]
Quote HistoryQuoted:
The only injury was to the shooter's shoulder, he's otherwise unharmed. This is from /r/guns. Quote HistoryQuoted:
Quoted:
What does your face look like? The only injury was to the shooter's shoulder, he's otherwise unharmed. This is from /r/guns. Good to hear, that is very surprising though. |
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Posted: 2/11/2016 2:58:29 PM EDT
[#24]
Looks like its ammo related. The barrel extension is split, pistol powder in a reloaded rifle case?
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Posted: 2/11/2016 2:58:57 PM EDT
[#25]
Quote HistoryQuoted: That is crazy, Ive never seen a kaboom that severe. Hope the guy is OK and not a lefty. I'd rather be a lefty than a righty when the left side of my gun explodes.  I'm lefty  |
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Posted: 2/11/2016 3:00:16 PM EDT
[#26]
Quote HistoryQuoted:
How is that possible if some guns feature the ability to turn gas off to prevent the bolt from cycling or opening? Quote HistoryQuoted:
Quoted:
Yes, I know what caused this. A "just right" level of overpressure seized the bolt and extension together. The gas had nowhere to vent fast enough, so the carrier grenaded. That's the damage that results from this incredibly uncommon failure. Lower pressure and lugs shear which vents the gas safely, higher pressure and the barrel/bolt fracture which again vents the gas. How is that possible if some guns feature the ability to turn gas off to prevent the bolt from cycling or opening? This was caused by the bolt being unable to unlock, but the high pressure gas still venting from the barrel as per usual. The pressure built up in the carrier behind the bolt and peeled the carrier apart. When you turn the gas off, you're not preventing the bolt from unlocking due to seizure, you're preventing gas from entering the carrier at all. |
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Posted: 2/11/2016 3:00:37 PM EDT
[#27]
Search the site for Kabooms. There are several you can look at for comparison.
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Posted: 2/11/2016 3:01:00 PM EDT
[#28]
Quote HistoryQuoted: Good to hear, that is very surprising though. Quote HistoryQuoted: Quoted: Quoted: What does your face look like? The only injury was to the shooter's shoulder, he's otherwise unharmed. This is from /r/guns. Good to hear, that is very surprising though. This is his injury  |
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Posted: 2/11/2016 3:01:06 PM EDT
[#29]
Quote HistoryQuoted:
Going with an under loaded "squib" round fired with the projectile stuck in the barrel, followed by firing a normal round resulting in crazy high chamber pressure. See how the barrel extension ruptured, and the bolt never unlocked? Yeah,looks like a barrel obstruction of some sort would be the cause of that |
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Posted: 2/11/2016 3:01:46 PM EDT
[#30]
My guess would be a plugged barrell also. It looks to me like all the pressure tried to vent back through the firing pin hole.
Maybe a squib from a reload. |
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Posted: 2/11/2016 3:01:51 PM EDT
[#31]
Quote HistoryQuoted:
Nothing useful to add, but DAMN!!! |
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Posted: 2/11/2016 3:01:53 PM EDT
[#32]
Tac Point.
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Posted: 2/11/2016 3:02:01 PM EDT
[#33]
Every Magpul component survived.
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Posted: 2/11/2016 3:02:24 PM EDT
[#34]
You people are overthinking this. This was caused by a rifle that obviously didn't want to keep living in a world where Bernie Sanders could possibly be president. It was barely hanging on, hoping, during the Obama tyranny, but New Hampshire was the final straw.
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Posted: 2/11/2016 3:02:32 PM EDT
[#35]
Was it one of those Walmart Colts?
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Posted: 2/11/2016 3:02:54 PM EDT
[#36]
Squib
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Posted: 2/11/2016 3:03:24 PM EDT
[#37]
Quote HistoryQuoted:
Yes, I know what caused this. A "just right" level of overpressure seized the bolt and extension together. The gas had nowhere to vent fast enough, so the carrier grenaded. That's the damage that results from this incredibly uncommon failure. Lower pressure and lugs shear which vents the gas safely, higher pressure and the barrel/bolt fracture which again vents the gas. The fracture of the barrel extension tells me all I need to know. This was an overcharged cartridge/overpressure event pure and simple. |
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Posted: 2/11/2016 3:03:40 PM EDT
[#38]
Quote HistoryQuoted:
My guess would be a plugged barrell also. It looks to me like all the pressure tried to vent back through the firing pin hole. Maybe a squib from a reload. This isn't what happens when the bore is plugged, that causes a completely different type of catastrophic failure. This is the result of the bolt being unable to unlock, but the gas port still doing its job to carry high pressure gas into the carrier. If the bolt can't unlock, the gas has nowhere to vent... and the carrier grenades as shown. |
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Posted: 2/11/2016 3:04:51 PM EDT
[#39]
Quote HistoryQuoted:
Looks like wrong powder or way over charged case.That gun Grenaded like a pipe bomb. Pistol powder accidentally loaded in the case would be my bet. I've reloaded .223 and the case it pretty darn full on a normal load. That was waaaaay over pressure to burst the barrel extension like that. |
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Posted: 2/11/2016 3:05:17 PM EDT
[#40]
Wear safety glasses. That could ruin your life.
Do we see this stuff with AK's? They use combloc ammo 24/7 |
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Posted: 2/11/2016 3:06:15 PM EDT
[#41]
Quote HistoryQuoted:
Classic lack of over lubrication. ^^^^^^ Listen to this guy he knows his shit. |
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Posted: 2/11/2016 3:06:31 PM EDT
[#42]
Didn't let it cool down before peeing on it. |
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Posted: 2/11/2016 3:06:32 PM EDT
[#43]
Quote HistoryQuoted:
Pistol powder accidentally loaded in the case would be my bet. I've reloaded .223 and the case it pretty darn full on a normal load. That was waaaaay over pressure to burst the barrel extension like that. Quote HistoryQuoted:
Quoted:
Looks like wrong powder or way over charged case.That gun Grenaded like a pipe bomb. Pistol powder accidentally loaded in the case would be my bet. I've reloaded .223 and the case it pretty darn full on a normal load. That was waaaaay over pressure to burst the barrel extension like that. The barrel extension wasn't the primary failure and is secondary to the bolt seizing and carrier grenading, in my opinion. It's an extremely uncommon failure, luckily. Since he was using factory ammunition, Wolf owes that man a new Colt. |
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Posted: 2/11/2016 3:08:16 PM EDT
[#44]
Quote HistoryQuoted:
Wear safety glasses. That could ruin your life. Do we see this stuff with AK's? They use combloc ammo 24/7 I've seen a similar mode of failure (bolt seizing and being unable to unlock due to high pressure) once on an AKM-47. The piston was bent, the gas block was fractured, but the rifle held well enough to prevent major injury. |
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Posted: 2/11/2016 3:08:54 PM EDT
[#45]
Quote HistoryQuoted: You people are overthinking this. This was caused by a rifle that obviously didn't want to keep living in a world where Bernie Sanders could possibly be president. It was barely hanging on, hoping, during the Obama tyranny, but New Hampshire was the final straw. Rifle, faced with taking the bullet button, suicided instead. |
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Posted: 2/11/2016 3:09:29 PM EDT
[#46]
If the bolt never unlocked, how could the bolt carrier get destroyed like that??
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Posted: 2/11/2016 3:10:45 PM EDT
[#47]
 I'm glad his injuries were so minor, but it's going to take him a looooong time to get rid of his new found flinch. |
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Posted: 2/11/2016 3:12:07 PM EDT
[#48]
Quote HistoryQuoted:
How is that possible if some guns feature the ability to turn gas off to prevent the bolt from cycling or opening? Quote HistoryQuoted:
Quoted:
Yes, I know what caused this. A "just right" level of overpressure seized the bolt and extension together. The gas had nowhere to vent fast enough, so the carrier grenaded. That's the damage that results from this incredibly uncommon failure. Lower pressure and lugs shear which vents the gas safely, higher pressure and the barrel/bolt fracture which again vents the gas. How is that possible if some guns feature the ability to turn gas off to prevent the bolt from cycling or opening? Those guns turn the gas off at the entry point (at the barrel) not at the exit point at the bolt carrier. Imagine pushing water through surgical tubing. If you turn off the water at the spigot, no problem. If you turn off the water at the end of the tubing, it will pressurize and eventually explode. |
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Posted: 2/11/2016 3:12:24 PM EDT
[#49]
Quote HistoryQuoted:
If the bolt never unlocked, how could the bolt carrier get destroyed like that?? GAS GAS GAS |
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Posted: 2/11/2016 3:12:52 PM EDT
[#50]
Quote HistoryQuoted:
If the bolt never unlocked, how could the bolt carrier get destroyed like that?? You might want to look into how an AR functions. It really is fascinating how the bolt and carrier interact, and it's always good to know how things function on a more detailed level. In this case, as the bolt didn't unlock, the high pressure gas entered the carrier through the gas key. Without unlocking, the vents in the side of the carrier continue to be obstructed by the bolt. The gas now has nowhere to go, the carrier fractures and causes the damage you see. |
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