I picked up a mossberg 500 persuader for a home defense shotgun. I'm looking to get a light for it... I need advice. I've googled and can't come up with much in the way of comprehensive guides, so I'd like to draw on practical experience you guys may have. I was looking at the surefire forend and can get one through the surefire group buy for ~175 but I really don't want to spend that much - I'm a college kid and only get to work about 3 months out of the year. I was looking at the possibility of using one of the universal clamps that clamps onto the barrel and the light. Are these practical? I can get away spending 50-60 bucks that way with a pretty good light. If I did that with a compatible cord/flashlight cap switch to locate the switch to the stock forend, would that be just as good?