Hmm. Dunno.
GAME's website only has the sniper rifle, & the tacky looking "Madcatz Blaster".
Gameplay however have 6 different guns for the XBox....
http://shop.gameplay.co.uk/webstore/...de=accessories
Cheapest they have are the
Joytech Sharp Shooter 2 &
Logic 3 XBox Laser Blaster, each £19.99 - The Logic 3 one has a foot pedal for reloading & has a laser sight, while the Joytech one is apparently 100Hz compatible (not all guns are - although of course it doesn't matter if you don't have a 100Hz TV).
The
Thrustmaster Beretta (£34.99 ) looks good (it's licensed by Beretta, so actually looks more like a gun than some other lightguns). The website also says it's recommended by Sega for using with House of the Dead 3.
The
Scorpion 3 (£24.99 - but not out 'till May) looks good.
No idea how well any of them perform though.
EDIT: Ah, Mantrid beat me to replying. The Beretta does definitely look cool