2D active ragdoll holding object

Hi, so I'm making a 2d stickman game and I'm to the point right now that I need to give my characters guns. I've sort of figured out how to have him hold it, the gun is able to shoot and I have a script to get the gun to point at where my mouse is. So my stickman holds the gun, but when a move my mouse around the gun goes off his hand and just floats in the air, the gun is connected by a hingejoint2D, it is also connected by a fixed joint on the lower arm and the upper arm, i have one on the upper arm so that when i aim the gun up, the upper arm goes up. Could this be the reason why my gun doesn't stay fixed on his hand, let me know if you need any of my scripts.

Any ideas?