Actually Hex,
That picture was taken outside with cloudy skies.
The sunlight tends to be extreme at times and is tough to shoot a group of guns, especially if they are bright stainless or nickel.
Test out different back drops.
Sometimes a plain backdrop will help you just focus on the guns themselves.
Other times, a natural backdrop can look wonderful.
Lighting is probably the most critical thing in any photograph. Background is also very important.
Check out this 500 with a natural backdrop.
Sometimes you can use to busy of a background and it can distract you from the actual subject. Like this one for example.
There are some really talented photographers here. I wish I could do better photos. Then I could do my guns justice.
***Go to the local fabric shop, I know this does not sound too manly, but buy yourself a couple different pieces of fabric to use for a backdrop. It will only cost you a couple bucks and you may even meet a couple of nice ladies in the process.
Good luck, Jeff (GUNKWAZY)