+1
This rule is odd and is very hard to enforce / rarely ever is enforced.
From what I've seen a huge part of the player base owns perm awps or other rifles bigger than a pistol and will use them even when they are hobo. For me personally (and I assume other people as well) its never worth the effort of clipping it, uploading it, creating a ticket, waiting for a staff member, and then sitting through a 10 minute admin sit just for the person to get a verbal warning and nothing to happen.