u might take a look at the Tru-fire sights, i have one that i got at wal-mart a few years ago, but i dont remember the price, but do know that they are good sights, they make them in 3, 4, 5, pin i think, mine is a 4 pin.

i could be wrong about the 4 pin it could be that i pulled one of the pins out of the 5pin model but dont know.