Streamlight broadened its line of compact laser/light units with the introduction of the TLR-4 G at the 2014 SHOT Show. Like the prior TLR-4 models, the new light and laser unit is designed for compact handguns. Unlike the prior models, this one uses a green aiming laser.
Streamlight previously released a green laser version of the TLR-2. While I found that laser to be extremely effective, I did find it to be somewhat limited by its operating temperature range (32° to 104° F). I tossed mine in a freezer and found that performance was definitely hampered when used at sub-freezing temps.
The new TLR-4 G fixes that with a much wider range of operating temps: -20° to 120° F.
The white light puts out 115 lumens and 5,200 candela, which should provide enough light for most self defense situations. On a single CR2 battery, the unit will run the light and laser for a full hour. Using only the light or the laser will significantly increase run times.
MSRP is $400, though I have found the street price on Streamlight gear to be substantially less than suggested retail.