When I first got my 716 I borrowed the Trijicon Accupoint 1-4x from my 516.
SIG 716 by
c.swimm, on Flickr
It's a great scope on a 5.56 and was OK on the 716, but I wanted a little more top end magnification to better take advantage of the increased range of the 7.62 round. When I saw the great accuracy potential of the 716 I kind of jumped too high and put a big Leupold MK4 6.5-20x50mm FFP M5 on it.
SIG 716 by
c.swimm, on Flickr
I could shoot sub-MOA gorups with it, but it was too much scope for the 716. It is a patrol carbine and not a DMR. I still wanted a little more top end magnification than the 4x but didn't want to go too high on the low end to where it wouldn't be good for closer in targets. I ended up trying out the Nightforce 25-10x and it seems to be perfect for the 716 in my opinion.
SIG Sauer 716 rifle by
c.swimm, on Flickr
So I played the whole Goldilocks and the 3 bears (rather scopes) routine with my 716. This scope is too small, this scope is too big, but this scope is just right.