UDK Arm Swap/Counts/Texture Sizes

[Autocon]

Hi All.

So a friend asked me and I couldnt find the awenser so I thought I would ask here. Dose anyone know how or knosws a good tutorial for changing the arms of the default character out with a custom one?

Also what kinda tri/texture limits are generally found with UDK/Crysis type arms.

Note these are the arms that hold your FPS gun.

Thanks.