This is NOT a cheap throw away laser. From the moment you open the box you sence the quality. I've owned a couple lasers under the $100 price point and they are junk compared to this one. It's well worth the money. It looks & feels well built. Something a soldier would mount on his weapon. Even the on/off rubber covered push button on the back of the unit feels strong & tough. The green laser itself can be easily adjusted from a small dot on the wall to a large "light up the whole space" flashlight. The powerful green looks like night vision. This unit comes with a thick rubber removable lense cover to protect the glass when not in use. Also comes with a battery & an optional plug in cable that extends the on/off switch closer to your hand for a "quick on situation." This thing looks great on my AR-15.
Pros: bright green lighting, built tough, loves cold temps.
Cons: a tad bit larger than I'd hoped for
This review was written in the old system and had content requirements that are different than reviews written today.