I can't speak to whether the connector is any different in the very early pencil barrel G17s, but the trigger on my AK-prefix G17 (pencil barrel) is noticably different than all of my later Glocks. It feels spongier and less mechanical than the Glock triggers we are all use to. I've shot my pencil barrel G17 and it feels differently both dry and live firing.
Below is the only picture I have on hand. Everything is 100% original down to the non-captured RSA
Below is the only picture I have on hand. Everything is 100% original down to the non-captured RSA
