Does anyone make an LED drop in for the SureFire M900A Vertical Foregrip?

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Just wondering.

 

[tussery]

This is the only drop in LED I have seen for that style lamp.

http://www.lighthound.com/index.asp?PageAction=VIEWPROD&ProdID=2333

Edit: I remember Milkyspit made one also.

 

[Wave]

Holy smokes that's EXPENSIVE!

Any idea how it stacks up against the stock incan bulb? Lumens? Runtime?