Anyone have any familiarity with the interworkings of these complicated beasts?

Purchased a 76 a few months ago. I own 3 66's but this is my first venture into the world on the 76. When pulled, the trigger won't release the striker. At first I thought the safety wasn't disengaging, so I opened up the receiver and removed the bolt and let down the striker manually. I then noticed a small broken spring laying in the bottom of the receiver. I haven't tore the gun down more than this, but can anyone ID this spring? Trigger Spring? If so could that be the reason the trigger won't release the striker? I need to tear it down more, but I haven't had a chance to yet.

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[Linked Image]


One too many hobbies....