I really like this laser/light combo. It mounted very easily on my full size Beretta PX4 Storm. The "zombie" edition appears to be the same as the regular X5L but it has the biohazard symbol on the on/off button and comes in a "specimen bag" package. The laser is very bright and was able to see it at 25 yards during normal daylight - impressive. The various laser/light strobe features are nice and you can cycle through them to see which one you like the best. When you turn the unit on by simply tapping the button, it returns to the mode you were using last. Once the unit is on it's easy to cycle through the modes by simply pressing both on/off buttons at the same time. Very easy to operate. Combined with a Viridian TacLoc holster, the unit will immediately activate upon drawing from the holster - a nice feature. Fit and finish is high quality and I would recommend this product. I think for the price it's one of the best tactical laser/light products on the market.
Pros: Easy to install, easy to operate, bright laser
Cons: Really none. The light could be a bit brighter but considering the size of the unit and the single battery operation it's pretty darn good.
This review was written in the old system and had content requirements that are different than reviews written today.