The S2 has a two stage trigger, and a very good one at that!
The takeup [first stage] is light and when you get to the end of that, it is a clean break for the second stage,
which, of course, is adjustable.
My two went down below 3 lbs with ease, but I hunt my rifles at 3 lbs, so all I need.
I also have 3 - S1 Vanguards, and while two of those triggers are fine after adjustment,
the third one got a Timney after a bit of frustration with it.
All in all, the Vanguards are a winner! All mine are perfect for their intended purpose - hunting.
Regards, Eagleye.