For firearms that require white dots you could add them to the product line for little to no cost like the example below.
Of course all dots will come with a U/V blocking clear protective dot which completely covers the applied dot keeping it secure and fade resistant.
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I'm way ahead of you pal, but the problem is making the white dot perfectly round, like the red ones. I need to invest in a better program I suppose, one specifically for working "in the white".