Arnold worked very hard when shooting “Terminator” in Huai Bei. He blindfolded and practiced disassembling and reorganizing the gun until he could combine the gun very smoothly like a fully automatic machine.
And he spends a lot of time shooting at the driving range, mainly to shoot, load, and change bullets without blinking or even looking at the gun. He even practiced using the firearms with his left and right hands.
The outstanding results of his practice were greatly appreciated by the American military magazine , which is most often the wrong way to use weapons in acid movie roles.