David was packing heat.

Discovery takes a peek inside a famous statue’s hand to find Michelangelo’s lost weapon of war:

“Bulging with veins, the right hand is holding what remains of a terrible weapon used in antiquity until the 17th century,” art historians Sergio Risaliti and Francesco Vossilla wrote in the book L’Altro David (“The Other David”).

Called a fustibal, or staff-sling,the weapon was used to throw stones.

“With a leather sling attached to the end, the staff acted like a portable trebuchet (a large catapult-like device),” classical folklorist Adrienne Mayor, who was not involved in the study, told Discovery News.

“We believe the object is actually the handle to which a staff had to be mounted, much alike a golf pole,” Risaliti told Discovery News.