Arnold Schwarzenegger’s Son Looks Shredded While Filming First Action Film

For Joseph Baena and Arnold Schwarzenegger, the apple doesn’t fall far from the tree … Joseph’s looking absolutely jacked as he films his very first action flick.

TMZ obtained these behind-the-scenes photos from the set of the upcoming action movie, “Called to Duty,” and Joseph is super shredded … just like his pops.

Arnold’s son will be showing off his guns on the big screen … it looks like they filmed one scene in the gym, where he’s lifting weights in a tank top.

The movie sounds kind of like “Top Gun” … it’s about Navy air show pilots who get sent into battle … and it’s loosely based on real events between the United States and North Korea.

Joseph is playing Lt. Andrew “Bells” Harris, a Navy fighter pilot, and it’s his first foray into action movies … so his dad’s gotta be super proud.