I just did this last weekend to my M&P9. I love it. It came out great! I did one coat thick coat and let it sit for about 5 hours. Then I wiped it off. At first I applied the nail polish, let it sit for 30 min then tried to wipe it and noticed the polish could have sat longer. The 5 hours worked for me. But you only really need an hour or so. I started to upload a pic from my desktop, but for some reason it's asking for an URL address. Ugh. Lol.