My grip is made up of Super Plastic Pudding (I think its called putty in english), aircraft grade epoxy and 60/80 mesh Sillicium Carbid (carborundum). I love it, I can grip the gun with much less preassure and BOTH  of my hands have 100% contact with the gun.

1) Put skateboard tape on the grip (insurance if you are not happy).
1) Mix the PP (Plastic Pudding) according to the instructions.
2) Apply PP to the grip. A lot for the hollow in the week hand.
3) Grease your hands - I used olive olie sice it was what I had handy.
4) Wait a while then grip the gun and work the PP until you have the perfect grip, then HOLD until it gets too hot.
5) Remove any obvious excess.
6) Wait, wait, wait until the PP has hardened ( i left it over night)
7) if possible remove the gripp of the gun or tape (cover) the gun so that only the new grip is visable, this is where the Dremel comes handy, remember that the gun may not be over 45mm high..
8) Dust off the gun.
9) Mix the epoxy (make sure to use a slow hardening type)
10) If mixing the SC (i could only find 60 & 80) do so in a standard "diner" issue salt shaker.
11) Cover the grip in Epoxy, be very, very meticulous because there is no adding more glue after you start to drissle SC.
12) Make sure you have covered the magfunnel so nothing gets in there, U DONT want this stuff in any working part of the gun becuase this is the stuff 3M makes all the sandpaper out of... but then again If the gun is too tight then use it instead of slide glide and voila u have a very loose gun in seconds..
13) Drizzle the SC over the grip, make sure you have a plastic bag underneath to collect everything that falls off. Be excessive..... Be excessive.
13.5) I check my gun every 20min to see if the glue had "eaten" the SC, if so just drizzle some more. There is no such thing as drizzling too much, there is no adding more once the glue has hardened.
14) Wait for the epoxy to harden. Then take a copper (or other harder brush) and brush of any loose SC (0nce again u don't want this stuff in the gun)
15) Assemble the gun and you have your own "Dalmas Custom" grip.

I've calculated that my gun became about 2.5 ounces heavier after this. I'll change from a steel magwell to alu and those 2.5 are back.

It took me two attemps before I was happy, Using skateboard tape as base makes sure you can get the reverse plug out and if you are not happy you can get your original grip back in seconds. I have tried with Chemical wood & metal but they are too heavy and hard. I apply SC to magwell also since my hands are in contact with that too.

Cost: (in denmark)
SC 200 grams (enough for 100 guns) $ 7.50
Plastic Pudding (enough for 3-4 guns) $ 10
Epoxy (enough for 5-6 guns) $ 12
Time: The gun will be out of service for 24 hours.

Pictures

Need to know how to get the grip off the gun? HERE