This was an early shot of what I had in mind.
I wasn't happy with the yukky background and after some solid feedback from colleagues regarding the pelican case a few things changed. Firstly very rough background geometry bashed together to add further depth and exit to image, at this stage I also am playing with different grades and image effects in Photoshop. Modular piece bashed together after work.
Then onto renders, post and presentation of the gun taking some inspiration from my 'Art of District 9' book flown all the way over from New Zealand as Amazon had run out . High Res Here