Getting two visible hands to show when holding a gun.

[FireIsH0t]

Hey I was wondering how I could get one of my items/gun to be able to render 2 hands on the screen so the player can look and them and it will look very cool and awesome. I want to do something similar to this: http://prntscr.com/lltq7r But I have no idea on were to start.

[Cadiboo]

You could look at where hands get rendered in vanilla normally, and write code in the appropriate event to render another hand holding the gun if the players offhand is empty