Even though the gun is hardly going to be visible, it had to go in. I really just had to texture it and so one, and started looking at a bug where the gun wouldn't lift higher than a certain point. Quite quickly I noticed that it is similar to another bug on the sight. Turned out it was the Dot product that always takes the smallest angle, and you have know when it's negative or positive. So, solved that.
So Saturday I was kinda lethargic and just messed around in photoshop trying out some ideas for the normal textures for the ground and sand. This quickly turned into a quite a bit of work that carried on through Sunday, and I've only done like 12 tiles worth :) But it least helps to make things look awesome. Here's the ground and the sand, both obviously most visible in low light conditions.