Hello guys, I would like to change the stock op rod on my saiga 12 to the Tom cole heavy duty rod. I found a website that sell tap and dyes to clean out the carrier and fix the threads on the op rod in case I need it after I profile the heavy duty one for aks. They also have a jig that screw the op rod and can drill a straight hole without a vice and drill press. The question is are the saiga12 and ak 47 threads the same.