Jason Momoa says Sylvester Stallone has 'slabs of meat for fists'.
Momoa goes head to head with Stallone this week in new action movie Bullet To The Head - the film culminating in a fight scene between the pair.
And while Momoa is the younger man the actor admits that Stallone still has a mean swing.
Speaking to Men's Health the actor said: "At the end of Bullet To The Head I had to swing this wooden axe at top speed right at Stallone and you don't really want to clip him. He's got these slabs of meat for fists."
This is the first movie outing for the actor since he lead the cast in Conan the Barbarian as he has juggled TV and film projects in recent years - he also found huge success in the first season of Game of Thrones.
But we are going to see Momoa concentrate on film this year as he has already completed work on Wolves and Road to Paloma.
Road To Paloma will see Momoa reunite with his Bullet To The Head co-star Sarah Shahi as he makes his feature length directorial debut.
As well as being in the director's chair for the film he is also on the cast list and has penned the script.
Bullet To The Head is out now.