I still do not see how any of these things are a poll tax. A poll tax is something that inhibits your right to vote by charging you money. For example, requiring a government-issued ID may be construed as a poll tax.

Are you arguing that regulations and taxes on guns and accessories are LIKE a poll tax because they inhibit exercising your interpretation of the 2nd amendment? If that is the case, I would argue that it is different as the 24th amendment specifically outlaws poll taxes and there is no similar law or amendment around firearm accessories.