This is a Walther Laser, model 512104.
This red laser sight fits the Walther P22 3.4 and 5 guns and mounts forward of the trigger guard and under the barrel on the built in rail. This red laser sight features high-strength Zytel polymer construction" user-adjustable windage and elevation. The P22 laser slides onto the P22 accessory rail and self-locks into place. It can be removed using the quick detach system. This package includes the CR2 3V lithium battery" 2 adjustment wrenches" the tactical latch bar" and an operator.
Features:
Includes adjustment wrenches
Uses CR2 battery
QD mount
High strength Zytel polymer construction
