Drop-in LED for surefire.
Just got my Drop in LED from deal extreme and its about as bright as my P61 bulb. Some of the first run had problems with the fit but it appears they make great use of customer feedback. The drop in (for my G2Z) required no modification for me and was the best $12.50 I ever spent.
Now I can save batteries and my $25 P61 bulb. Run time is about 2:30 compared to the P61 at :20. I might buy the rechargeable batteries and charger next. This drop-in will increases your options for you favorite surefire light. Now all I need to do is find a place to get a 6P defender bezel to put on the G2Z. Anyone know where to find one?