Im trying to find the dovetail size for the norinco ns522. I tried to search but came back with either 3/8th or 11mm, what size is everyone using? and what brand and type are you using?.. I had the gun sitting in the case for awhile with a set of scope rings that dont sit properly on the arched receiver/dovetail. The rings never had a arch machined into them just cut straight across and they hit the arched receiver on the ns522. I think the brand is burris if I remember correctly I could be wrong