While you are on the site, in your browser find and click "Add to Home Screen" A CGN beaver app icon will then be created to your phone that is directly link to the site.
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I did it to my hi-point. It's quite grippy now. The shape of the solder tip determines the shape of the stippling. The texture on mine is quite random, but it feels nice to hold and I like the look.
it looks and feels like crap. I got stuck with a Glock that had a "octopus sucker" job done to it, and I wasn't pleased. Thankfully, a CGN'er with more patience than me gave me a fair trade for it.