I was under the impression most scope manufactures offered a mil-mrad version, Vortex offer this on most of their range as I have two PST's and a Razor in this option, here are a few options for you although you may have sorted this out now as this reply is a little late
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http://www.vortexoptics.com/product/razor-hd-gen-2-45-27x56-riflescope-with-ebr-1c-mrad-reticle/reticle
http://www.opticsplanet.com/sightron-siii-3-5-10x44mm-rifle-scope-siiiss3-510x44md.html
http://www.brownells.com/optics-mounting/scopes/rifle-scopes/compact-nxs-2-5-10x42mm-riflescopes-prod58259.aspx?avs%7cReticle_1=Mil-Dot
http://www.usoptics.com/optics/mr-10.html
http://www.vortexoptics.com/category/viper_pst_riflescopes
Tried to find a range from different places so hopefully something will fit the bill