AceShowbiz -

Though production is still underway on "John Rambo", a trailer from the action movie delightfully has come up online at Ain't It Cool News for all the fans to see and give comments on.

Running at three minutes and a half, the footage is claimed by AICN to be handed down exclusively by lead star Sylvester Stallone himself, who made it for the film distributors at this year's Cannes Film Festival. It signals the flick to positively be an R-rated movie as it shows a number of blood-drenched kills and even spots the titular character pulls out a man's throat as well as performs one outright beheading.

The fourth installment of "Rambo" franchise, this next chapter sees our hero come out of his retirement to track down missionary aid workers who have disappeared in the jungles of impoverished Myanmar. Not only stars in, Stallone also takes the helming duties as well as the producer's seat alongside Randall Emmett, George Furla, and Avi Lerner.