I was not able to find a specification sheet on the Weaver 2 piece base, but I would assume these are torqued either the same or almost the same to the Weaver Single piece base which many shooters use here. As for the rings I was able to find the manufacture page which lists the base thumb clamp screws at 25-30 in/lbs. and the Ring screws at 15 in/lbs.
Here is the link
http://www.vortexoptics.com/product/...30mm-rings-low
Also you could call IronSighter Company @ 734-326-8731 and ask Tech Support I am sure they would have an answer for the base.
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