Gas tube pic. rail optic mount options for a krink

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stormwerkz makes a pic rail that mounts to the dust cover .. need to drill holes
ultimak- goes gastube
RSREGULATE - connects to the side rail on the receiver they make different models you can research and Get the one that works for Krinks there are 2 types of Krink dust covers that we have here in America the sam7k dust cover and the regular Russian old style aks74u dust cover. the reason why I'm mentioning this is because the 2 dust covers have the rear sight in different places so you would have to get the rs regulate side rail according to that..