Solid, works with crane switches - Holosun LE221 Elite Dual Laser Sight

Picked one of these up shortly after release, its a pretty solid laser. Mounts directly over the bore so you don't have to worry about parallax. I did have an issue with POI shift the first time I shot it, but tightening up the QD lever a couple clicks resolved that. Hasn't moved since. Excellent visibility on low and high settings. The switch connector is Crane compatible so you can use it with any of your typical dual switch (ex. surefire) setups. There is a small light on the back of the unit which is barely visible in total darkness to let you know the laser is on. It's unobtrusive and doesn't cause a signature issue.