.Map :: MoHAA Mapping

What ive done in my map is ive made on side of the wall caulk so you can see through it on one side only. But i would like to shoot through it also. How do i do this? Whats going to be there is either a flak88 canon or just some sort of super power turret gun that can shoot through a hidden wall. Any help would be much appreciated. Thanks !!

Use common/nodraw instead of caulk.

Thanks that worked perfect !!