Help rotating FakeArms weld to face a part

How would I make a weld rotate to face another part? I’m making it for FakeArms. It seems to give me more control over animation and also makes aiming in and out much smoother. I’ve been looking but I can’t find anything that answers my question. If you can at least link me to a post that could help me on this, I would highly appreciate this. I’ve already tried this tutourial by EgoMoose, but I can’t seem to get it to work as I want the gun on the left, rather than right, side of the screen. The aiming works, however.

Edit: What I mean is to make the arm face a part. I have 2 parts in a gun for each arm for them to rotate towards and I want each to rotate on their corresponding one.

You may adjust the C0 value that offsets the gun from the camera.

I have the fake arms worked out. What I need is for the arms to face the parts where they’ll grip the gun i.e. hold it. Also I have the gun positioned right.