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Posted: 6/11/2007 7:18:44 AM EDT
[#1]
Is the barrel clear? If you run your fingers down the barrel can you feel any bulges? I'm obviously thinking barrel obstruction causing an over pressure.
E.T.A. Was this your gun? Are you uninjured? |
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Posted: 6/11/2007 8:08:04 AM EDT
[#2]
This was FACTORY ammo? Not a handload or a commercial reload? I say this because it looks like an overcharge of a VERY fast powder WW231 or something similar.
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Posted: 6/11/2007 8:21:14 AM EDT
[#3]
 Wow. I'm kinda new around here, but that's the worst looking AR KB I've ever seen. Could the wrong powder really have done that? |
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Posted: 6/11/2007 9:20:06 AM EDT
[#4]
Yeah I've seen an AR at the range do that when handloaded with blue dot by mistake (similar looking powder cans and distracted user). That guy probably would have died if he hadn't been left handed as most of the bolt and other pieces exited the left hand side of the gun.
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Posted: 6/11/2007 9:22:54 AM EDT
[#5]
tagged and holy crap.
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Posted: 6/11/2007 9:25:43 AM EDT
[#6]
Outta battery detonation.
mike |
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Posted: 6/11/2007 9:30:06 AM EDT
[#7]
wow......WOW. dear lord that is a crazy kaboom!
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Posted: 6/11/2007 9:36:38 AM EDT
[#8]
THATS NOT THE WAY TO TREAT YOUR M16!!!!!!!!!!!!!!!1
SLUG-O |
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Posted: 6/11/2007 9:42:24 AM EDT
[#9]
My guess?
Pistol powder in your rifle cartridge. Mark left  , unbuffable
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Posted: 6/11/2007 2:14:48 PM EDT
[#10]
My guess would be blocked bore before the gas tube takeoff because no carrier damage.
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Posted: 6/11/2007 2:28:58 PM EDT
[#11]
Holy rat shit......that's nasty.
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Posted: 6/11/2007 6:06:28 PM EDT
[#12]
It's sure to BUFF OUT
Pistol powder or barrel blockage is my guess |
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Posted: 6/11/2007 6:12:52 PM EDT
[#13]
tagged.... May I add these pics t my site if we ever figure out the cause?
This is one of the biggest Kabooms I have seen... Another kaboom or three Is that a Transferable receiver? Did the receiver get damaged? Were you shooting this full auto when it KABOOMED? EDIT: Ooops you are in the Philipines... Is this a factory MG or something you converted? Did you test the timing before the KABOOM? |
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Posted: 6/12/2007 4:45:48 AM EDT
[#14]
Not merely a brass case failure with normal charge. Not an OOB. Notice magwell's not even bent. Gun was locked. KB was pretty much over by time unlocking commenced. Damage confined mostly to chamber/bolt. High-pressure for sure. Cause could be pistol powder or obstruction.
Could sort this out by finding out precise ammo source, and by talking to the shooter. Did he cycle a "misfire" before next round KB? First shot KB? Did he forget to remove cleaning rod? Sam |
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Posted: 6/12/2007 5:02:29 AM EDT
[#15]
I have only seen 1 blowup like that and it was someone using pistol powder by mistake.
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Posted: 6/12/2007 5:10:08 AM EDT
[#16]
I'd guess about 250,000 PSI.
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Posted: 6/12/2007 6:43:27 AM EDT
[#17]
24 hours and no reply from OP.
 The mob gets restless.....
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Posted: 6/13/2007 6:18:51 PM EDT
[#18]
<----------------  
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Posted: 6/14/2007 10:58:21 AM EDT
[#19]
OK maybe im guilty of doing alittle damage to an M16 from time to time...  Slug-O 
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Posted: 6/14/2007 11:00:01 AM EDT
[#20]
nope guess not
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Posted: 6/14/2007 11:07:41 AM EDT
[#21]
I hope that wasn't what it looks like (m16a2) it looks like there is some visible damage to the lower and who knows what other damage there may be and that puppy in good shape is worth.. er 16k ish? |
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Posted: 6/14/2007 11:08:39 AM EDT
[#22]
He is from Cebu, Philippines , so who know what the law is there |
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Posted: 6/14/2007 12:01:20 PM EDT
[#23]
+1 so I will guess it is worth about $900 US. Makes you wish you could move, huh? |
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Posted: 6/16/2007 3:33:49 AM EDT
[#24]
Dollars to donuts, if the ammo is not handloaded, I'm betting on obstructed bore.
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Posted: 6/16/2007 3:49:17 AM EDT
[#25]
Ammo handloaded with C4 by mistake?
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Posted: 6/16/2007 8:52:23 AM EDT
[#26]
The ammo used was military M193 made by WCC circa 1977. The lower receiver is fine, only the upper got busted.
Bbl obstruction is unlikely, there are no rings after the chamber of the bbl. A slight bulge near the chamber area is present. We are thinking about ammo overpressure here, but would also wnat to know what you guys think. There is no damage to the shooter, only a little scratch on the face and hands. |
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Posted: 6/16/2007 9:25:31 AM EDT
[#27]
AND A PAIR OF VERY MESSY UNDERWEAR!!!!!!!!!!!!!!!
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Posted: 6/16/2007 10:38:01 AM EDT
[#28]
Celuboy,
I think it very unlikely that just one single round of factory loaded ammo made it out with pistol powder. Given manufacturing processes, a bad lot would be far more likely. Pistol powder KB would make more sense if the detonated round were of different headstamp/lot. Noone ever wants to admit to loading another live round behind a squib, but it happens. I was a witness to two such near-screwups in one day - one was a .50 M2, the other a Sturmgewehr. Both were prevented only by the timely intervention of a good friend. Both shooters were having brain cramps, apparently. Location of bulge or ring is dependent on location of obstruction. Thus a bulge in the chamber is not unexpected if squib head made it just beyond a worn throat, or if inadequate case neck tension on following round allowed for deep seating. Sam |
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Posted: 6/17/2007 2:53:16 AM EDT
[#29]
Barrel marked M1S huh?
Well everyone knows thats what happens when you use Model 1 Sales parts........
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Posted: 6/19/2007 5:41:14 PM EDT
[#30]
I am with Samuel in that a bullet was pushed into the case and the result was case head failure.
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Posted: 6/30/2007 5:48:09 AM EDT
[#31]
how far does it need to be pushed in for this to happen? |
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Posted: 6/30/2007 5:51:25 AM EDT
[#32]
Thats my thoughts also. +1 |
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Posted: 6/30/2007 8:53:36 AM EDT
[#33]
Just far enough to allow completed lockup of a loaded round with a squib stuck in the bore. How far would depend on where the squib is stuck in the bore. Squib location would depend on throat condition and how hard it was driven forward. Very deep seating (as with telescoping) will usually raise pressures even when there's no squib out front - this is not a hypothetical concern with 9X19 and similar rounds of limited case capacity. Sam |
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Posted: 7/22/2007 11:04:41 AM EDT
[#34]
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Posted: 7/23/2007 12:34:49 PM EDT
[#35]
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Posted: 7/26/2007 10:33:51 AM EDT
[#36]
Just one bad primer or a powder charge that for some reason did not fire completely. Or perhaps the primer fired but the powder did not ignite. Whatever happened, the bullet pushed out enough to lodge in the bore.
... slight bulge near the chamber area is present. Then another round was fed into the chamber and fired and BAM!!! At a range with other shooter on both sides, it was possible to think there was just a stoppage for some reason, the charging handle pulled to feed in a fresh round, and BAM. It has happened before, and this will not be the last time. Sorry for damaged rifle. Glad you weren't injured. I would not try to salvage any of the upper receiver parts except for, perhaps, the flash hider and front sight pin and spring/detent. The rest of the upper, dispose of it. |
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Posted: 7/27/2007 3:59:13 AM EDT
[#37]
I don't know much about ammunition other than shoot them. Is there any expert out there that can put down a laundry list of the most likely cause from high to low of the "kabooom".
Shooting factory ammo: Reload ammo: |
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Posted: 7/27/2007 5:20:00 AM EDT
[#38]
That shit will buff right out.
Seriously, that's the most catastrophic AR failure I've ever seen. Whoever survived that was very, very lucky. |
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Posted: 7/27/2007 5:55:53 AM EDT
[#39]
The Force is strong with this one.
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Posted: 7/28/2007 11:32:17 AM EDT
[#40]
It is not likely that one round out of millions of rounds of factory ammo will be loaded with the wrong powder. Just not possible.
Ditto with handloaded ammo. Not likely to be just one bad round... it would be all of them loaded with the wrong powder. But he says this ammo is not handloaded, but factory loads. The bulge just ahead of the chamber is the clue. And the resulting damage all points to an obstructed bore. |
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Posted: 8/1/2007 8:28:37 AM EDT
[#41]
My guess would be an Out-of-Battery firing. Some debris stops the bolt from locking completely, and pow.........all that pressure, and nothing holding it in.
 Damn lucky, i'm glad no one got hurt. |
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Posted: 8/9/2007 5:55:49 PM EDT
[#42]
There were so-called "demolition rounds" that were made by the Philippine Army during the 1980's. The bullet heads were pulled out and TNT was added to the powder. The Philippine Army left them in areas where they encountered the Communist New People's Army. The rebels usually scour the area after a while to scavenge for left behind ammo, magazines and other useful items. That is why it has become a policy of the Armed Forces of the Philippines to DESTROY all ammo that was recovered in an encounter site. |
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Posted: 8/9/2007 5:59:20 PM EDT
[#43]
We tried inserting ammo to the chamber of my friend's M16 who kaboomed and the ammo can't go in the chamber anymore. |
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Posted: 8/9/2007 6:01:52 PM EDT
[#44]
double post. deleted
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Posted: 8/9/2007 6:07:02 PM EDT
[#45]
Wow. Glad everyone is ok.
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Posted: 8/9/2007 6:10:56 PM EDT
[#46]
how, in a ar15 the bolt has to rotate back and lock before the fireing pin can make contact with the primer. |
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Posted: 8/9/2007 6:40:34 PM EDT
[#47]
I'd say a massive over pressure event. Either an overcharge of powder or an obstructed bore. You can see that the case head flowed into the ejector hole. That's some seriously bad juju.
Semper Fi |
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Posted: 8/9/2007 7:34:06 PM EDT
[#48]
would have to say overcharged 5.56 round in a 223 chamber, just a guess though
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Posted: 8/10/2007 12:31:44 AM EDT
[#49]
Irt would have taken a ridiculous amount of presure to split that barrel extension and then the upper receiver too- for whatever reason you had a pressure buildup of epic proportions there.
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Posted: 8/10/2007 12:49:56 AM EDT
[#50]
IIRC a rifle liscense is required to buy a long gun. It makes no difference what length the bbl is and whether or not it has that evil hole above the selector. Pistols are easier to get a liscence for as well. |
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