I did the ghost sights on my 870. The front sight sits on a heat shield (yes I have put enough rounds through it at once to burn my arm, yes it was funny) which does raise it up a bit. The rear sights also sit a little higher, so I always have to aim about 1" - 1.5" above where I am shootin to hit dead on. Once you shoot enough and learn how your gun shoots you automatically adjust when shooting it.
But the only raised sights I have seen on the front were those on heat shields. You might be able to use a tall post from a slug barrel on it though to get your raised front sight
JD
Last edited by JD Beam; 01-15-2012 at 12:39 AM.
Reason: because i cant spell and went of on a random tangent and removed said tangent
"Sarcasm is the lowest form of wit" as said by those incapable of its proper application and as such suffer from it a lot.