I don't put anything over the marine-tex. It dries to that dark grey color.
Stippling is a must. Check out Kyle DeFoor's recent blog posts on a minimalist approach to stippling a Gen4 G19.
Okie John
It's important to note that not all stippling will provide an appropriate improvement in grip on the gun.
With my Glock I went with a fine stipple pattern. It's not bad and does provide a better grip on the gun, but it's not perfect. At a recent indoor class, it was extremely humid and my hand were sweating enough to cause issues, even with the stippling. I'm going to redo it.
I made some improvements with a more coarse pattern on a Sig Clone I had:
With my Beretta I went even more coarse and it works very well. So well that I had to sand down some portions that contact the web of my hand.
I usually leave the areas of factory Gen4 checkering intact, and stipple all the smooth areas of the grip. I do sand down the lower outboard (right) heel of the grip just a little. This is really just to keep from chewing up the inside of Under Armor and Dri-fit type polos that I wear in the summertime.
It depends on how thick you put it on. That picture of the Glock 22 is heaviest I have done and I honestly didn't notice any extra thickness, but I am sure if you put a set of calipers on it, it would be. I eventually sanded that one back down to the polymer and retextured it. Looked and performed better the second time, but I don't have any pictures of it.
You really don't have to put it on that heavy to get good texture. It does take some practice to figure out the process, so if you try it, buy a cheap AR-15 grip or something and practice first.
Good copy. That makes sense. I may have to find some polymer to dabble with. Thanks for the info and link.
t
I like the stippling on this G17 chopped for 19 mags by ColdBore Customs.