Adjustable beam surefire?

[ILLusion]

I've been hit with 60 lumens before and I can guarantee that you'll be seeing spots afterwards, especially if your eyesight has been acclimated to a darker atmosphere.

[tunabreath]

So I went out and for a Surefire G2 + P61 lamp, and wow, it's bright
I was looking into converting it into a weapon light and maybe increase the brightness further for standoff shooting at night. I can mount it using 25mm scope rings. Could anyone tell me about the compatibility of the G2 with any of these:
http://www.wgcshop.com/pcart/shopper..._Flash%20Light
http://www.wgcshop.com/pcart/shopper..._Flash%20Light
http://www.wgcshop.com/pcart/shopper..._Flash%20Light
http://www.wgcshop.com/pcart/shopper..._Flash%20Light

Also, about improving the brightness, would it be more effective to go with an 6P->9P extender (would this even be compatible with a G2?) or this:
http://www.wgcshop.com/pcart/shopper..._Flash%20Light

It seems that the G&P battery set only provides 7.4V, which they claim is enough to power a 9V lamp. Would the lamp be as bright as if I used an extender tube and got the full 9 volts (planning on getting a P91 lamp assembly)?

[tunabreath]

Hmm, I was just testing out the P60 and P61 lamps... I'm kind of disappointed in the P61 for its 'blinding effect.' It seems that despite having double the lumens, the illuminance (lux, I guess) is about the same. Effectively, it's about the same brightness, but the beam has about a 30% greater diameter. While this is greatly useful for actually lighting things up to view them in the dark, it's no more effective at blinding a person than the standard P60 bulb. I'm not too convinced that this is worth the diminished runtime.
I wonder if a 9V bulb is any brighter, or just the same with a wider beam... I suppose in order to get a better effect, I have to get the rather bulky Turbohead conversion... Or are there any lenses that fit over the head that I could use instead?

By the way, for those wondering about the G2's blinding power, here the results for myself. I went from moderate light (basically suburban nighttime, streetlights and the like) to almost no light (bedroom, streetlights through the half closed blinds) only briefly, so my eyes were only moderately adjusted for the dark. I pulsed the G2 into a mirror a little under 10 feet away from me once (so the light source would be represented at about 20 feet). When the light went on, my peripheral vision was hazed and washed out and my center vision (45 degrees) was pretty well completely whited out. After the light, my peripheral vision returned instantly, but I had a big purple green spot (like when you rub your eyes too hard) covering ALL of my center vision for about one second, which (over that second) reduced to about 10 to 15 degrees. That smaller spot lasted about another 45 seconds before diminishing enough that it wasn't in any way distracting. My night vision was (obviously) completely eliminated, and I couldn't see much beyond what was lit up by the streetlights.
I'm not sure if it's just me that gets the green purple after effect... I normally get blue for camera flashes, yellow purple for most flashlights.

For CQB purposes, if you're limited to semi, this is sufficient. It's very hard to aim with that giant spot in your vision, and that second of impairment can be enough to put in one well placed shot.

[Valcrow]

The beam profile for all 4 light assemblies you've mentioned (p60, p61, p90 and p91) are almost all identical because the reflector hasn't changed. The P61 and P91 appears to have a slightly bigger oval shaped hotspot due to the higher lumen count.

The noticeable difference is this, the P61 and P91 put out more light than it's counterparts. It's not immediately apparent when wall-hunting (reflecting the light off the wall to see how bright it is because your eye adjusts to it) but will be very apparent when used in a dark outdoor environment. For example, someone who gets hit by 65 lumens at 40 feet will feel the same intensity as someone hit by 120 lumens at 60 feet. (while not exactly in that ratio, for comparison only.)