I need some help, ive been on the web for several hrs combined looking for a canadian sig sauer scope dealer who will have the tango 4 in the moa reticle.iam building a 6.5 grendel rifle and for my hunting purpose this i believe will work and i love the scope itself.i cant seem to find anywhere i can purchase this scope except amazon.ca where its sold out.any help would be great, i dont want to give up and have to get a vortex. Thanks gunner