Hommer,

understood - the SVI do look very 'futuristic' (which I happen to like). Maybe you should find an old Colt 10mm 'Delta Elite' and use this as a base for some conversions. I shot that gun when it came out and it did handle and shoot very well. I would in any case suggest that you get a 6' barrel - the cartridge only comes to life with that barrel length, also it cuts the recoil and makes it easier to shoot as the long barrel steadies the gun.