Originally Posted by Cobalt Caliber
There are other options, but admit it, real lights are brighter, more durable and if you have rails (which you can get for an MP5) not much more expensive than crappy clone lights.
Sure, they're brighter etc etc....but I'd rather pay the $75 for a Surefire M900V replica than the $600 a retailer wants for an authentic one. I'm not using it on a real weapon and its purpose is almost purely cosmetic on an airsoft gun unless you're playing in the dark. Even then it does its job fairly well.