Mumbai, April 25 (ANI): Filmmaker Anurag Kashyap who recently attended the special screening of Kangna Ranaut's 'Revolver Rani' went gaga about the film and said that its needs great courage to make such a film. While Kangna who plays a criminal politician in the film looked quite confident and happy with the reviews. Directed by Sai Kabir the film also stars Vir Das, Piyush Mishra and Zakir Hussain and is out on theaters near you to watch it.