It let's the battery adjust perfectly every time without having to trial and error the height of the positive pin. Ends up snug as a bug every time without issue.
Not mine... Maybe my Acerig is more prone to it than yours, but doing it that way it only worked the first few times I would pick it up and put it down, then beyond that it's loosey goosey and the battery is back to rattling around, and the firing is intermittent and requires hard pushes. Anything pushing this much current needs to have some torque to be anything close to robust, and this ain't it. Preventing the battery from spinning allows a proper bite.
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