Looks like a stock trigger group to me but I am certainly no expert at identifying triggers. How can the GD folks tell it's a Hornet?
As an aside, I owned a Hornet trigger group many many years ago. Sold it and never missed it. I have owned a lot of different 10/22 trigger groups over the years. My current trigger group is a Kidd.
If i was looking for folks who know a lot more than me about 10/22 triggers I would go here and ask:
https://www.rimfirecentral.com/forums/forumdisplay.php?f=145