Here are a few light options I am considering:

Current set-up: Surefire G2 in 1" scope ring
Pros: cheap, works for my needs so far, lightweight, within my budget
Cons: not sure about long-term durability, not designed as a weaponlight, enough for indoors but lacking for outdoors, doesn't match TA11 well for best night ability

Possible set-up: Surefire G2 with P61 lamp, AN14 adapter, Z32 Shock isolated bezel, B65 battery adapter in 1" scope ring
Pros: within budget, uses existing equipment already on-hand, 125 lumens and 1 hour of run time in lightweight 9v package, shock-isolated bezel
Cons: still not designed as a dedicated weaponlight, more expense (about $40 + a G2), high output lamp on G2 builds up a lot of heat

Possible set-up: M962C with throwlever
Pros: Allows use of vertical grip or not as desired, dedicated weaponlight, better combination of grip and light possible with less weight? Versatile positioning of light
Cons: More weight, much more expensive, outside of current budget

Possible set-up: M900 with throwlever
Pros: LED navigation, dedicated weaponlight, compact, light is in desired location (below bore)
Cons: Heavy, can't remove light without losing grip, Is grip durable enough to withstand a good muzzle strike without breaking? Grip breaks and you lose light too, most expensive and outside of current budget.

I welcome any comments that anybody here has to add. My current experience with lights on weapons is limited entirely to a G2 tie-wrapped on to M4 handguards and only lately have been able to upgrade to 1" scope rings on a rail handguard.

The KR1 Rechargeable Kit for the G2 has the AN14 so that a B65 NiCad battery stick can be used to power the P60 - the runtime and Lumen output using the B65 is not quite as good as when powered by the two SF123As.
In addition, the B65 can power the P61 120Lu/20min High Output Lamp Assembly but again, it can't power it for very long.
And another thing, the B65 is not suggested for WeaponLight applications. I don't think it's designed to handle recoil.

If you want to adapt your G2 to power either the P90 or P91 9V (three SF123A batteries) then you'll need the old A19.

I have photos of this - please email me if you would like to see them. [email protected]

Al