Mumbai: While Fardeen Khan, Irrfan Khan, Dino Morea and Aftab Shivadasani will flaunt their well-toned bodies in "Acid Factory", Manoj Bajpai is the only one who couldn't work on his physique for the film.

"I couldn't tone up my body for the film because of a shoulder injury I suffered nearly two years ago," Manoj told IANS.

For Sanjay Gupta's "Acid Factory", a special trainer has reportedly been hired to train the stars for their roles in the actioner.