My AR-15 is Jamming... WTF?

[••SpraynPray••]

For the sake of asking since the pics didn't come up on my work computer. What kind of ammo are you using? Remember that there are different chambers in AR-15's. There is .223 and then 5.56. There cut different if only slightly. If its bulk ammo you might be running into different brass with the round that hangs up.
If the ammo is something that is a heavier grain bullet(say over 77g) is it possible that the bullet is starting to engage the rifling and getting stuck?

As for the trigger needing to be reset by hand, That tells me that its either dirty, has a broken spring or that the bolt was not completely closed.

Hope this helps.

The ammo is all chambered for .223 Most of it is Blackhills ammo or PMC, bought it in 50 round bricks. 55-65 grain. as far as broken springs Ive taken the rifle apart and searched for anything that could be causing the issue and it seems all is in order.. Or im just not looking hard enough.

When I turned the rifle to look it seemed the bolt wasnt fully closed (it was only slightly open) when the trigger was stuck. I pushed the trigger forward with almost no force and it closed and was ready to go. I just asumed I didnt put enough oil or w.e on it, or it burned off ? =D