0.3" rail riser?

[DreadPirateMoyer]

Does anyone know of a 0.3" rail riser out there?

I know YHM makes one (for railed gas blocks), but it takes up too much rail real-estate for what I need. I need something similar to YHM's small 0.5" rail riser, but...0.3".

Any help you can provide would be much appreciated.

[eperk]

Try Burris. I used them. they take up very little room but I'm not sure they are exactly 0.3"