AR Blown up

[Tommyt]

I'm not on this sight much ,but I read this ,this am and thought you guys may want too see it
I copied his POST
[Qoute]This afternoon. I decided to join the AR crowd, and put my own together. An LAR Grizzly lower, and a DPMS H Barrel upper. Out of the box, the upper was superbly accurate at 100 yards. I put one mag through it and just started a second when it came apart. Buggered up my left hand a little, but it surprised the snot out of me. Absolutely no indication that anything was wrong. It functioned flawlessly. Called Midway, and they won't replace it. Will have to call DPMS-Panther and find out what they will do. The same ammo was used in my AR 180b, and it too functioned perfectly. Fiocchi ammo. Any ideas as to what would cause the upper to blow like that? [/quote]

 




http://s163.photobucket.com/al...5.jpg
http://s163.photobucket.com/al...2.jpg
http://s163.photobucket.com/al...3.jpg
http://s163.photobucket.com/al...1.jpg

[Old Syko]

Tommy where did you find this thread?  Thought maybe it would be on ARFCOM but I didn't see it if it was.  Could you please provide a link?  The story smells fishy to me.

[KN]

Looks like a bore obstruction to me. Looks like high pressure blew the bolt back and it pretty much comes apart after that.   kN

[Tommyt]

Guys I'll PM the link too it .I know nothing of these type guns . I frequent the page that had it and I figured GB's board is a good one so I looked and here and found this AR forum so I thought I'd pass it on
I'll make no claims to any part of this other than I read it
Links on the way 

[Old Syko]

Thanks Tommy!  Like I said, I'm going to watch this to see how it turns out.  From what I see in the pics this is nothing but a serious overpressure round and not a failure of the upper assembly. 

[SharonAnne]

very strange. the gas tube is in place and the bolt is locked in place but the bolt carrier is blown apart. and where is the lower? it should have suffered severe damage. i wonder is some one packed det-cord in the receiver to do this!??!?!

[Savage]

very strange. the gas tube is in place and the bolt is locked in place but the bolt carrier is blown apart. and where is the lower? it should have suffered severe damage. i wonder is some one packed det-cord in the receiver to do this!??!?!

Bore obstruction just forward of the gas block might destroy the bolt carrier and upper without unlocking the bolt!---------But I couldn't rule out the det-cord either!    I  wonder what we are not being told about this rifle.
Savage