E-mail Author Send to a Friend Version March 24, 2006, 7:45 a.m. Firing Blanks American Gun. By Louis Wittig Participant Productions — the film company that takes Ben & Jerry’s zeal for social change and makes it George Clooney sexy — had a great 2005. All the big name projects it touched — Syriana, Good Night and Good Luck, North Country, Murderball — turned that gleamy Oscar-nominated gold. Long in production, American Gun is set to be one of the first Participant-funded movies out of the gate in 2006, and, well, things change. The low-profile semi-tragedy is a tiring,...