You could do this with a PHR module, driver and a battery for ~$45. Or you could get a 6X in a custom anodized Kryton Groove for $275. You are going to have to be more specific about what you mean by "laser."
Peace,
dave
[highlight]**EDIT**[/highlight] Or, I guess, you could get a Wicked Lasers Sonar for $2,000.00 ;D