The Viridian E-Series green laser sight is a model-specific laser built for the Taurus TX22. It mounts to the trigger guard, so it stays low and compact and doesn't need a rail. The green laser is easy to see, which makes for fast target acquisition at practical distances.
Viridian designed the E-Series for everyday carry and home defense. On a TX22, it also makes a good training tool: the dot shows you exactly where the muzzle is pointed, and you can see trigger-control problems, like the dot jumping as you press, in dry fire and at the range.
Features:
Why green: the human eye picks up green light more easily than red, so a green dot stays visible in brighter conditions where a red laser can wash out.
Setup: unload the pistol before installing. Mount the laser per Viridian's instructions, then zero it to your sights at the distance you shoot most, since a laser is only accurate at the range where it's zeroed. Check your holster fit with the laser installed, and confirm the switch reaches comfortably with your grip.