So I am removing the stock off an AK to install a receiver extension tube. Front screw comes out just fine, back screw turn a couple of times, gets stuck and strips the screw head. I use a Grabit Pro bit to remove the stripped screw, it grabs hold and twists the screw head off. I've pretty much made this about as hard as possible at this point. Any suggestions on where I can take it to get this screw out?

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