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Discovery 5-30x56 question

My son is getting me a new scope for Father's Day he order the Discovery 5-30x56 which I'll be putting on my impact.

I see on the zoom knob a screw head does anyone know if that's a spot you can put a threaded shaft in order to make zooming easier.



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I have used those gadgets from amazon in the past and I may use it in this case I know some other scopes have that screw in levers as part of the scope I just wasn’t sure as currently the post office hasn’t delivered it to me. I saw that screw on the scope on Charles web site that’s were the picture came from. I’m not crazy about the cable tie look of some of the scope ring aids.