WTS ONE OF MY SOTAC PERST 4 CLONE GREEN LASERS THIS IS A NON POTTED ONE HAS NO TIME ON IT. I USE MY POTTED ONE, I BOUGHT HANDFUL OF THESE UNITS LETTING ONE GO I WANTED TO TEST EM, THESE DO HOLD ZERO, AND WORK FLAWLESSLY FOR A CLONE LASER UNIT, I POTTED MOST OF MINE, THIS ONE IS NEW NOT POTTED.