How to make a clothing mesh follow an arm mesh? I'm trying to model, rig and animate simple FPS hands (hands only, no body). I have the guns all set up and animated and I just have to do these hands.

I've rigged it and edited the weights a bit, but when I move the bones in the arm, the arm itself moves perfectly fine but the "clothing" I've put on them doesn't follow the arm right, it rotates slower than the arm and falls behind, and also scales smaller as the arm moves.





How do I solve this? Thanks

Blend file included https://drive.google.com/open?id=0B3g6-EZ98ikrS2c0am42VTNwYjg
To solve this:


Select your mesh and switch to edit mode
Select all using A
Hit P then choose By loose parts
Now there will be two meshes, the arm and the cloth. Select the cloth mesh and hit Alt+P then clear Parent
Select your cloth mesh then select the armature as well using Shift+ Right Click
Hit Ctrl+P and select with Automatic weighting


and this will be the result: