Help deciding which model to choose?

Hello, Can anyone help steer me to the best model to purchase? I would like to build a programmable robotic arm that can hold a 12oz. heat gun. The body of the gun is 2" in diameter. I would like to program the arm to rotate the heat gun in a one inch square pattern for approx. 5 minutes then off. My budget will support up to $500.00. Any suggestions would be appreciated.

This kit might be what you need:

Thank you Carlos. That is the one I will purchase. Thanks again.

Hello, Can anyone help steer me to the best model to purchase? I would like to build a programmable robotic arm that can hold a 12oz. heat gun. The body of the gun is 2" in diameter. I would like to program the arm to rotate the heat gun in a one inch square pattern for approx. 5 minutes then off. My budget will support up to $500.00. Any suggestions would be appreciated.