SVI made me a gun in 10 mm to my specs. You have endless choices with them, the look of the guns is extraordinary, and the precision is second to none:

Here are the gun-builder choices open to you with them:

http://www.sviguns.com/1101.php?indx=3

And here are some pictures of how the guns look like:

http://www.sviguns.com/1500.php