Theta Optics collimator holosight 551

An advanced targeting system by Theta Optics that replicates the EoTech Holosight 551 system. The body of the device is made of aluminum and ABS plastic. It can be mounted on a standard 22mm rail, and with the help of a large screw, it can be secured using either a screwdriver or by hand. On the right side, there are adjustment screws for targeting. At the rear, there are electronic controls for power on/off and brightness adjustment. At the front, there is a compartment for batteries. To access this compartment, the securing lever must be lifted, and the cover containing the batteries must be removed.

Functionality

This system is equipped with both red and green illumination, allowing you to select the optimal color for the environment using a dedicated button. Just below this button, there are two more buttons that allow you to adjust the brightness of the displayed dot according to your needs. To turn on the device, press either of the two brightness adjustment buttons. To turn it off, press both brightness adjustment buttons simultaneously.

The device operates on 4 LR44 batteries. The operating time is sufficient to not cause issues during gameplay, but it is recommended to have spare batteries on hand.