Aalf, I have the same scope. I called around 9 months ago because they said you could get a retrofit zero stop installed, but didn't have it yet. Waited a few months,and called back and was told you couldn't. Not sure what the real story is anymore. Mine is on a 6 SLR and I regularly dial past one rotation so be nice to have ZS
If you noticed the scratching on the ammo box, the 40-X has a 40 MOA base on it, which gives me 82 MOA up, and 18 down.
So I'm just past one complete rotation off the bottom of the scope, so it's easy to remedy if I get lost on the dial.
So in reality, a zero stop would be nice, but it's not a necessity for me.