Please help my Stag-Arms AR-15 model L1 with removable carry handle, The thumbscrews that retain the carry handle on the rail of the upper receiver one of them is stripped on the opposite side so when turning the thumbscrew the pin just spins in place so not allowing you to loosen and remove from the upper receiver rail. I'm wanting to remove the handle so I can install scope in its place. Scope is just to high mounted on the handle. Any recommendations on this project would be really helpful. And I would be grateful. Thank you.
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