Good perforamance, reasonable price. - Steiner DBAL-I2 Dual Beam Aiming Laser Device

I have yet to try the IR laser. The green laser is nicely visible and it's easy to sight it in vs. a red dot sight. The green laser may not be ideal for bright and outdoor use outside of maybe 15 meters.

May not work well for a lefty without the pressure pad, as others have mentioned. I wish there were a second switch to allow for momentary vs. constant on. I suppose it's not that big of a deal to double click the button.

I inadvertently left it on and had a dead battery when I checked it out. The spring tension made it slightly awkward to change the battery. Probably not something you would want to do in a real world scenario. Avoid putting a DBAL-I2 too close to the front sight as this might interfere with battery changes. Fortunately, the battery is quite short.