I was a door gunner on a Huey UH-1 during the Vietnam. My weapon was the M-60E2 hung by a simple bungee cord from the starboard door. I loved that weapon. It got myself, the crew and the bird out of hellish situations. On mine I had painted a peace symbol and a heart symbol in white on the shoulder stock end. I would suggest going to the link I provided for these symbols in white vinyl decals. There is a Peace, Heart and a Music symbol in this ebay item.
http://www.ebay.com/itm/PEACE-LOVE-M...-/270989631955.
I also had mission complete tally hash marks for 194 missions from 1970 to 1972
Nick Retired CMSGT, USAF