Scottish actor Gerard Butler was joined by his co-stars, and Sam Childers to premiere the action biopic film "Machine Gun Preacher".At the event, Butler talks about how playing Sam Childers, gave him new insights about life. Gerard Bulter who plays Sam Childers in "Machine Gun Preacher", speaks about how he was exposed to the crisis in Africa upon receiving this role, which is based on a real-life story of a former ex-con, who turned his rebellious days around, by becoming the saviour of hundreds of kidnapped and orphaned children in Sudan. "I came across this subject matter and I was, it was not something I knew much about and especially when you watch the movie you realize how extensive this issue is and how horrific this is. So it was an education for me, so I came out of the other side of it really enlightened and without a doubt profoundly moved," "I just think, not that this film should ever feel preachy, but if it's going to inspire you, I don't feel that it has to inspire you about Africa, just about something."The real-life Sam Childers, who was also at the gala, echoes Butler's vision in hoping that his own encounters can drive and motivate others. " I believe this movie, when people come out of it, it's not about Sam Childers, it's about what can they do and it's actually starting to happen." " Machine Gun Preacher" which also stars Michelle Monaghan, will hit theaters on September 30th.