Sooo... How did this happen?

[StacattoP]

So..... I was up at pit 36 shooting my AR and had a jam forgot to lube er up pulled the mag out and seen this? What the heck could have caused this!??

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[Capn Jack]

Not a tight enough crimp.

Often caused by failing to trim cases to the proper length. Violent action of the bolt slamming home will
either force bullet into the case, or leave it stuck in the chamber when you eject the case. either way, one
of the most common cause of AR 15 failures.

 

[cooper]

Had same happen. Mine was not a bad crimp it was a warning.
Had a squib in barrel.
Take down pins are easier to operate without PINS IN YOUR HAND.
good catch , good habit is to toss through brass for any tells.
Every CRAPTASTIC CARTRIDGE I have encountered had a tell. Some you learn after " TWIN CITY "

 

[Geardo]

This is why self defense ammo for ARs should be sealed AND crimped!

 

[MannyGlocks]

Factory ammo?

If not, probably why I'm not into reloading...

 

[StacattoP]

Factory ammo?

If not, probably why I'm not into reloading...

Yes sir factory ammo federal 556

 

[titsonritz]

shooting my AR and had a jam

I HATE this term.

eta: "this" not "his", damn keyboard.

 

[Geardo]

I HATE his term.

Why? Does jam make you angry because you forgot to put peanut butter in your 1911 clip?

 

[titsonritz]

Why? Does jam make you angry because you forgot to put peanut butter in your 1911 clip?

Sort of the point, jam is the stuff you spread on toast and such, guns malfunction they don't "jam".